Details of the Researcher

PHOTO

Dorai Arunkumar
Section
Institute of Multidisciplinary Research for Advanced Materials
Job title
Specially Appointed Associate Professor(Research)
Degree

  • Ph.D in Physics (Bharathiar University, India)

  • Master of Science in Physics (Bharathiar University, India)

Research History 10

  • 2026/07 - Present
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials

  • 2024/04 - 2026/03
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials　Associate Professor

  • 2023/04 - 2024/03
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials　Foreign Researcher

  • 2022/07 - 2023/03
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials Center for Mineral Processing and Metallurgy　Assistant Professor

  • 2022/04 - 2022/06
    Tohoku University　Institute for Materials Research　Research Fellow

  • 2019/04 - 2022/03
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials　Specially Appointed Assistant Professor

  • 2017/04 - 2019/03
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials　Assistant Professor

  • 2013/07 - 2017/03
    Tohoku University　Institute of Multidisciplinary Research for Advanced Materials　Post Doctoral Researcher

  • 2011/10 - 2013/03
    Korea Insitute of Energy Research　Energy Materials Center　Senior Researcher

  • 2004/07 - 2005/04
    Arignar Anna Government Arts College, Cheyyar, Tamil Nadu, India　Department of Physics　Lecturer

Show all Show first 5

Education 3

  • BHARATHIAR UNIVERSITY, COIMBATORE. INDIA　PHYSICS　DOCTORATE IN PHYSICS

    2006/04 - 2011/08

  • BHARATHIAR UNIVERSITY, COIMBATORE INDIA　PHYSICS　MASTER IN PHYSICS

    2002/07 - 2004/04

  • ARIGNAR ANNA GOVERNMENT ARTS COLLEGE, CHEYYAR / UNIVERSITY OF MADRAS　PHYSICS　BACHELOR IN PHYSICS

    1999/07 - 2002/04

Committee Memberships 3

  • Japan Physical Society　Japan Physical Society

    2018/01 - Present

  • The Electrochemical Society of Japan

    2017/02 - Present

  • The Solid State Ionics Society Japan

    2016/06 - Present

Professional Memberships 3

  • THE ELECTROCHEMICAL SOCIETY OF JAPAN

  • THE PHYSICAL SOCIETY OF JAPAN

  • THE SOLID STATE IONICS SOCIETY OF JAPAN

Research Interests 5

  • All Solid State Battery

  • Ionic conductors

  • Fluoride ion battery

  • Lithium ion battery

  • PFG-NMR

Research Areas 3

  • Nanotechnology/Materials / Energy chemistry / Rechargeable Batteries

  • Nanotechnology/Materials / Inorganic materials /

  • Nanotechnology/Materials / Applied materials /

Papers 46

  1. Atomistic insights into fluoride ion conduction in Ba1−xSnxF2 from 19F PFG-NMR studies Peer-reviewed

    Arunkumar Dorai, Reiji Takekawa, Atsushi Mineshige, Miwa Murakami, Takahisa Omata, Junichi Kawamura

    Scientific Reports　16　(1)　22370　2026/05/18

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1038/s41598-026-49832-1 　

    eISSN： 2045-2322

  2. Evaluation of platinum extraction mechanism in ionic liquids using multinuclear NMR spectroscopy

    Nithya Hellar, Arunkumar Dorai, Junichi Kawamura

    Journal of Molecular Liquids　2025/07

    DOI： 10.1016/j.molliq.2025.127643 　

  3. Optimization of lymphatic drug delivery system with carboplatin for metastatic lymph nodes Peer-reviewed

    Miriu Miyatsu, Ariunbuyan Sukhbaatar, Radhika Mishra, Arunkumar Dorai, Shiro Mori, Tetsuya Kodama

    Scientific Reports　15　(1)　16037　2025/05/08

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1038/s41598-025-99602-8 　

    eISSN： 2045-2322

  4. Role of hydrogen in the n-type oxide semiconductor MgIn2O4: Experimental observation of electrical conductivity and first-principles insight Peer-reviewed

    Saki Kudo, Tomoyuki Yamasaki, Issei Suzuki, Arunkumar Dorai, Rafael Costa-Amaral, Soungmin Bae, Yu Kumagai, Hiroshi Tanimura, Tetsu Ichitsubo, Takahisa Omata

    APL Materials　13　(4)　041118　2025/04/19

    Publisher: AIP Publishing

    DOI： 10.1063/5.0253161 　

    eISSN： 2166-532X

    More details Close

    Hydrogen impurities significantly influence the electrical conductivity of oxide semiconductors such as MgIn2O4, widely used in devices such as thin-film transistors. However, their role and chemical environment have not been fully clarified. This study investigated the conductivity of MgIn2O4 at elevated temperatures under air and H2 atmospheres, revealing higher and reversible conductivity in H2 due to hydrogen dissolution. Hall measurements, thermal desorption spectrometry, and nuclear magnetic resonance spectroscopy revealed that hydrogen dissolves in MgIn2O4, ionizing to produce electrons and interstitial protons. Density functional theory calculations indicate that hydrogen stabilizes near vacant octahedral cation sites, forming O–H bonds and shallow donor levels. Indium atoms at magnesium sites lead to shallow donor levels, whereas oxygen vacancies form deep levels. The results identify interstitial hydrogen and indium atoms at magnesium sites, rather than oxygen vacancies, as key donors under H2-rich or low oxygen conditions, providing insights for controlling the conductivity of MgIn2O4 in devices.

  5. Direct observation of Mn-ion dissolution from LiMn2O4 lithium battery cathode to electrolyte Peer-reviewed

    Nithya Hellar, Yoshiki Iwai, Masato Ohzu, Sebastian Brox, Arunkumar Dorai, Reiji Takekawa, Naoaki Kuwata, Junichi Kawamura, Martin Winter

    Communications Materials　6　23　2025/02/13

    DOI： 10.1038/s43246-025-00733-2 　

  6. Enabling Ca plating and stripping by electrolyte manipulation in low-volatility solvents for Ca metal batteries

    Kohei Shibuya, Kazuaki Kisu, Arunkumar Dorai, Yukiya Shinoda, Takara Shinohara, Shin-ichi Orimo

    Chemical Communications　2025

    DOI： 10.1039/D5CC01242B 　

  7. Enhanced Durability of Ca Metal Battery with Dual Salt: Synergistic Effect on Solid Electrolyte Interphase and Solvation Structure for Improved Electrodeposition Peer-reviewed

    Kazuaki Kisu, Arunkumar Dorai, Kan Hatakeyama-Sato, Tomoya Takano, Shigeyuki Takagi, Kenichi Oyaizu, Shin-ichi Orimo

    ACS Applied Materials & Interfaces　17　1322-1331　2024/12/16

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acsami.4c18599 　

    ISSN： 1944-8244

    eISSN： 1944-8252

  8. Ion transport properties and performance of gellan gum based composite polymer membrane electrolytes in proton battery and PEMFC applications Peer-reviewed

    Meera Naachiyar Ramadhasan, Ragam M, Selvasekarapandian S, Aafrin Hazaana S, Arunkumar D, Nithya H, Muniraj Vignesh N

    Materials Today Communications　41　110801-110801　2024/10

    Publisher: Elsevier BV

    DOI： 10.1016/j.mtcomm.2024.110801 　

    ISSN： 2352-4928

  9. Complex Hydride-Based Gel Polymer Electrolytes for Rechargeable Ca-Metal Batteries Peer-reviewed

    Takara Shinohara, Kazuaki Kisu, Arunkumar Dorai, Kenji Zushida, Hiroshi Yabu, Shigeyuki Takagi, Shin-ichi Orimo

    Advanced Science　2308318　2024/07

    DOI： 10.1002/advs.202308318 　

  10. Understanding Ion Dynamics in Closoborate-Type Lithium-Ion Conductors on Different Time-Scales Peer-reviewed

    Arunkumar Dorai, Sangryun Kim, Naoaki Kuwata, Junichi Kawamura, Kazuaki Kisu, Shin-ichi Orimo

    The Journal of Physical Chemistry Letters　15　(18)　4864-4871　2024/04/26

    Publisher: American Chemical Society (ACS)

    DOI： 10.1021/acs.jpclett.4c00754 　

    ISSN： 1948-7185

    eISSN： 1948-7185

  11. Performance study of sodium alginate (SA) with lithium chloride (LiCl)-based solid-state membrane as an electrolyte in electrochemical device application Peer-reviewed

    S. Aafrin Hazaana, Joseph Ancemma, S. Selvasekarapandian, R. Meera Naachiyar, G. Balasubramanian, Dorai Arunkumar, Hellar Nithya, N. Muniraj Vignesh

    Ionics　30　(3)　1413-1435　2024/01/03

    Publisher: Springer Science and Business Media LLC

    DOI： 10.1007/s11581-023-05350-y 　

    ISSN： 0947-7047

    eISSN： 1862-0760

  12. Magnetic resonance imaging: An innovative approach to observe rare metal extraction using ionic liquid Peer-reviewed

    Arunkumar Dorai, Mrutyunjay Panigrahi, Yoshiki Iwai, Nithya Hellar, Junichi Kawamura

    Physical Chemistry Chemical Physics　26　18021-18029　2024

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/d4cp01593b 　

    ISSN： 1463-9076

    eISSN： 1463-9084

    More details Close

    In the present work, a novel approach has been made to evaluate the extraction mechanism of neodymium (Nd) using trihexyl-tetradecyl-phosphonium benzoate (TTPB) ionic liquid through nuclear magnetic resonance (NMR) techniques....

  13. An insight into lithium-ion transport in germanium-doped lithium titanate anode through NMR spectroscopy and post-carbonization for anode applications in lithium-ion battery Invited Peer-reviewed

    Sreejith, O.V, Arunkumar Dorai, Junichi Kawamura, Murugan Ramasamy

    Applied Physics Letters　122　103904　2023/03

    DOI： 10.1063/5.0139773 　

  14. Fast divalent conduction in MB12H12·12H2O (M = Zn, Mg) complex hydrides: effects of rapid crystal water exchange and application for solid-state electrolytes Peer-reviewed

    Kazuaki Kisu, Arunkumar Dorai, Sangryun Kim, Riku Hamada, Akichika Kumatani, Yoshiko Horiguchi, Ryuhei Sato, Kartik Sau, Shigeyuki Takagi, Shin-ichi Orimo

    Journal of Materials Chemistry A　10　(46)　24877-24887　2022/11

    Publisher: Royal Society of Chemistry (RSC)

    DOI： 10.1039/d2ta06060d 　

    ISSN： 2050-7488

    eISSN： 2050-7496

  15. Drug formulation augments the therapeutic response of carboplatin administered through a lymphatic drug delivery system Peer-reviewed

    Radhika Mishra, Ariunbuyan Sukhbaatar, Arunkumar Dorai, Shiro Mori, Kiyoto Shiga, Tetsuya Kodama

    Cancer Science　114　(1)　259-270　2022/10/14

    Publisher: Wiley

    DOI： 10.1111/cas.15599 　

    ISSN： 1347-9032

    eISSN： 1349-7006

  16. Visualization of polysulfide dissolution in lithium-sulfur batteries using in-situ NMR microimaging Peer-reviewed

    Arunkumar Dorai, Junichi Kawamura, Takahisa Omata

    Electrochemistry Communications　141　107360-107360　2022/08

    Publisher: Elsevier BV

    DOI： 10.1016/j.elecom.2022.107360 　

    ISSN： 1388-2481

  17. Effect of post-deposition annealing in oxygen atmosphere on LiCoMnO4 thin films for 5 V lithium batteries Peer-reviewed

    Norikazu Ishigaki, Naoaki Kuwata, Arunkumar Dorai, Takashi Nakamura, Koji Amezawa, Junichi Kawamura

    Thin Solid Films　686　137433-137433　2019/09

    Publisher: Elsevier BV

    DOI： 10.1016/j.tsf.2019.137433 　

    ISSN： 0040-6090

  18. In situ Raman spectroscopy of Li CoO2 cathode in Li/Li3PO4/LiCoO2 all-solid-state thin-film lithium battery Peer-reviewed

    Yasutaka Matsuda, Naoaki Kuwata, Tatsunori Okawa, Arunkumar Dorai, Osamu Kamishima, Junichi Kawamura

    Solid State Ionics　335　7-14　2019/07

    Publisher: Elsevier BV

    DOI： 10.1016/j.ssi.2019.02.010 　

    ISSN： 0167-2738

  19. Ionic conduction in Li3Na(NH2)4: Study of the material design for the enhancement of ion conductivity in double-cation complex hydrides Peer-reviewed

    Biswajit Paik, Hiroyuki Oguchi, Toyoto Sato, Shigeyuki Takagi, Arunkumar Dorai, Naoaki Kuwata, Junichi Kawamura, Shin-ichi Orimo

    AIP Advances　9　(5)　055109-055114　2019/05

    DOI： 10.1063/1.5093580 　

    ISSN： 2158-3226

  20. A complex hydride lithium superionic conductor for high-energy-density all-solid-state lithium metal batteries Peer-reviewed

    Sangryun Kim, Hiroyuki Oguchi, Naoki Toyama, Toyoto Sato, Shigeyuki Takagi, Toshiya Otomo, Dorai Arunkumar, Naoaki Kuwata, Junichi Kawamura, Shin-ichi Orimo

    Nature Communications　10　1081-1089　2019/03

    DOI： 10.1038/s41467-019-09061-9 　

    ISSN： 2041-1723

  21. Diffusion coefficient of lithium ions in garnet type Li6.5La3Zr1.5Ta0.5O12 single crystal probed by 7Li pulsed field gradient -NMR spectroscopy Peer-reviewed

    DORAI ARUNKUMAR, Naoaki Kuwata, Reiji Takekawa, Junichi Kawamura, Kunimitsu Kataoka, Junji Akimoto

    Solid State Ionics　327　18-26　2018

    DOI： 10.1016/j.ssi.2018.10.016 　

    ISSN： 0167-2738

  22. Development and characterization of proton conducting polymer electrolyte based on PVA, amino acid glycine and NH4SCN Peer-reviewed

    D. Vinoth Pandi, S. Selvasekarapandian, R. Bhuvaneswari, M. Premalatha, S. Monisha, D. Arunkumar, Kawamura Junichi

    SOLID STATE IONICS　298　15-22　2016/12

    DOI： 10.1016/j.ssi.2016.10.016 　

    ISSN： 0167-2738

    eISSN： 1872-7689

  23. Liquid-liquid extraction of neodymium ions from aqueous solutions of NdCl3 by phosphonium-based ionic liquids Peer-reviewed

    Mrutyunjay Panigrahi, Mariusz Grabda, Dmytro Kozak, Arunkumar Dorai, Etsuro Shibata, Junichi Kawamura, Takashi Nakamura

    SEPARATION AND PURIFICATION TECHNOLOGY　171　263-269　2016/10

    DOI： 10.1016/j.seppur.2016.07.044 　

    ISSN： 1383-5866

    eISSN： 1873-3794

  24. Structural, electrical conductivity, and transport analysis of PAN-NH4Cl polymer electrolyte system Peer-reviewed

    S. Sikkanthar, S. Karthikeyan, S. Selvasekarapandian, Dorai Arunkumar, Hellar Nithya, Kawamura Junichi

    IONICS　22　(7)　1085-1094　2016/07

    DOI： 10.1007/s11581-016-1645-x 　

    ISSN： 0947-7047

    eISSN： 1862-0760

  25. Structural, electrical and electrochemical properties of polyacrylonitrile-ammonium hexaflurophosphate polymer electrolyte system Peer-reviewed

    S. Karthikeyan, S. Sikkanthar, S. Selvasekarapandian, D. Arunkumar, H. Nithya, J. Kawamura

    Journal of Polymer Research　23　(3)　1-10　2016/03/01

    Publisher: Springer Netherlands

    DOI： 10.1007/s10965-016-0952-2 　

    ISSN： 1572-8935 1022-9760

    eISSN： 1572-8935

  26. Effect of Paramagnetic Metal Ions on H-1 Diffusion in Trihexyltetradecylphosphonium Benzoate Ionic Liquid Peer-reviewed

    Dorai Arunkumar, Mrutyunjay Panigrahi, Dmytro Kozak, Mariusz Grabda, Etsuro Shibata, Takashi Nakamura, Junichi Kawamura

    MOLTEN SALTS AND IONIC LIQUIDS 20　75　(15)　567-573　2016

    DOI： 10.1149/07515.0567ecst 　

    ISSN： 1938-5862

  27. Influence of substrate temperature on CeF3 thin films prepared by thermal evaporation Peer-reviewed

    Arun Kumar Dorai, Selvasekarapandian Subramanian, Nithya Hellar, Jarkko Leiro

    Materials Chemistry and Physics　143　(2)　765-772　2014/01

    DOI： 10.1016/j.matchemphys.2013.10.011 　

    ISSN： 0254-0584

    eISSN： 1879-3312

  28. Influence of Fe doping on the electrical properties of Sr 2MgMoO6-δ Peer-reviewed

    Arun Kumar Dorai, Yoshitake Masuda, Jong-Hoon Joo, Sang-Kuk Woo, Sun-Dong Kim

    Materials Chemistry and Physics　139　(2-3)　360-363　2013/05/15

    DOI： 10.1016/j.matchemphys.2013.02.039 　

    ISSN： 0254-0584

  29. The effect of gas compositions on the performance and durability of solid oxide electrolysis cells Peer-reviewed

    Sun-Dong Kim, Doo-Won Seo, Arun Kumar Dorai, Sang-Kuk Woo

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY　38　(16)　6569-6576　2013/05

    DOI： 10.1016/j.ijhydene.2013.03.115 　

    ISSN： 0360-3199

    eISSN： 1879-3487

  30. Effect of calcium doping on LaCoO3 prepared by Pechini method Peer-reviewed

    D. Arun Kumar, S. Selvasekarapandian, H. Nithya, Jarkko Leiro, Yoshitake Masuda, Sun-Dong Kim, Sang-Kuk Woo

    POWDER TECHNOLOGY　235　140-147　2013/02

    DOI： 10.1016/j.powtec.2012.09.030 　

    ISSN： 0032-5910

    eISSN： 1873-328X

  31. Laser Raman and conductivity studies of plasticized polymer electrolyte P(ECH-EO):propylenecarbonate:gamma-butyrolactone:LiClO4 Peer-reviewed

    H. Nithya, S. Selvasekarapandian, P. Christopher Selvin, D. Arun Kumar, M. Hema, Junichi Kawamura

    JOURNAL OF SOLID STATE ELECTROCHEMISTRY　16　(5)　1791-1797　2012/05

    DOI： 10.1007/s10008-011-1610-6 　

    ISSN： 1432-8488

    eISSN： 1433-0768

  32. Synthesis, micro-structural, and electrical analysis on lanthanum fluoride Peer-reviewed

    D. Arun Kumar, S. Selvasekarapandian, H. Nithya, M. Hema

    IONICS　18　(5)　461-471　2012/05

    DOI： 10.1007/s11581-011-0646-z 　

    ISSN： 0947-7047

    eISSN： 1862-0760

  33. Structural and conductivity analysis on cerium fluoride nanoparticles prepared by sonication assisted method Peer-reviewed

    D. Arun Kumar, S. Selvasekarapandian, H. Nithya, Yoshitake Masuda

    SOLID STATE SCIENCES　14　(5)　626-634　2012/05

    DOI： 10.1016/j.solidstatesciences.2012.02.008 　

    ISSN： 1293-2558

  34. Effect of propylene carbonate and dimethylformamide on ionic conductivity of P(ECH-EO) based polymer electrolyte Peer-reviewed

    H. Nithya, S. Selvasekarapandian, P. Christopher Selvin, D. Arun Kumar, Junichi Kawamura

    ELECTROCHIMICA ACTA　66　110-120　2012/04

    DOI： 10.1016/j.electacta.2012.01.056 　

    ISSN： 0013-4686

  35. Thermal, vibrational and Ac impedance studies on proton conducting polymer electrolytes based on poly(vinyl acetate) Peer-reviewed

    D. Arun Kumar, S. Selvasekarapandian, R. Baskaran, T. Savitha, H. Nithya

    JOURNAL OF NON-CRYSTALLINE SOLIDS　358　(3)　531-536　2012/02

    DOI： 10.1016/j.jnoncrysol.2011.11.031 　

    ISSN： 0022-3093

  36. Synthesis of Li1+xV3O8 by Chemical Route and Its Characterization Peer-reviewed

    Selvasekarapandian Subramanian, Sakunthala Ayyasamy, P. Christopher Selvin, M. V. Reddy, B. V. R. Chowdari, Nithya Heller, Arunkumar Dorai, Hema Muthusamy

    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY　12　(1)　737-742　2012/01

    DOI： 10.1166/jnn.2012.5362 　

    ISSN： 1533-4880

    eISSN： 1533-4899

  37. Structural and ionic conductivity studies on P(ECH-EO):gamma-BL:LiClO4 plasticized polymer electrolyte Peer-reviewed

    Hellar Nithya, S. Selvasekarapandian, P. Christopher Selvin, Dorai Arun Kumar, Muthusamy Hema

    IONICS　17　(7)　587-593　2011/09

    DOI： 10.1007/s11581-011-0603-x 　

    ISSN： 0947-7047

  38. Characterization of nanocomposite polymer electrolyte based on P(ECH-EO) Peer-reviewed

    H. Nithya, S. Selvasekarapandian, P. Christopher Selvin, D. Arun Kumar, M. Hema, D. Prakash

    PHYSICA B-CONDENSED MATTER　406　(18)　3367-3373　2011/09

    DOI： 10.1016/j.physb.2011.05.047 　

    ISSN： 0921-4526

  39. Thermal and dielectric studies of polymer electrolyte based on P(ECH-EO) Peer-reviewed

    H. Nithya, S. Selvasekarapandian, D. Arun Kumar, A. Sakunthala, M. Hema, P. Christopherselvin, Junichi Kawamura, R. Baskaran, C. Sanjeeviraja

    MATERIALS CHEMISTRY AND PHYSICS　126　(1-2)　404-408　2011/03

    DOI： 10.1016/j.matchemphys.2010.10.047 　

    ISSN： 0254-0584

    eISSN： 1879-3312

  40. Dielectric, modulus and impedance analysis of LaF3 nanoparticles Peer-reviewed

    D. Arun Kumar, S. Selvasekarapandian, H. Nithya, A. Sakunthala, M. Hema

    PHYSICA B-CONDENSED MATTER　405　(17)　3803-3807　2010/09

    DOI： 10.1016/j.physb.2010.06.004 　

    ISSN： 0921-4526

  41. Electrical properties of cerium fluoride thin films Peer-reviewed

    Arun Kumar Dorai, S. Selvasekarapandian, Nithya Hellar, Sakunthala Ayyasamy, Hema Muthusamy

    IONICS　16　(6)　481-486　2010/07

    DOI： 10.1007/s11581-010-0437-y 　

    ISSN： 0947-7047

  42. Laser Raman and ac impedance spectroscopic studies of PVA:NH4NO3 polymer electrolyte Peer-reviewed

    M. Hema, S. Selvasekarapandian, G. Hirankumar, A. Sakunthala, D. Arunkumar, H. Nithya

    SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY　75　(1)　474-478　2010/01

    DOI： 10.1016/j.saa.2009.11.012 　

    ISSN： 1386-1425

  43. Structural and ionic conductivity studies on proton conducting polymer electrolyte based on polyvinyl alcohol Peer-reviewed

    M. Hema, S. Selvasekarapandian, H. Nithya, A. Sakunthala, D. Arunkumar

    IONICS　15　(4)　487-491　2009/08

    DOI： 10.1007/s11581-008-0254-8 　

    ISSN： 0947-7047

  44. Structural and thermal studies of PVA:NH4I Peer-reviewed

    M. Hema, S. Selvasekerapandian, G. Hirankumar, A. Sakunthala, D. Arunkumar, H. Nithya

    JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS　70　(7)　1098-1103　2009/07

    DOI： 10.1016/j.jpcs.2009.06.005 　

    ISSN： 0022-3697

  45. FTIR, XRD and ac impedance spectroscopic study on PVA based polymer electrolyte doped with NH4X(X = Cl, Br, I) Peer-reviewed

    M. Hema, S. Selvasekarapandian, D. Arunkumar, A. Sakunthala, H. Nithya

    JOURNAL OF NON-CRYSTALLINE SOLIDS　355　(2)　84-90　2009/01

    DOI： 10.1016/j.jnoncrysol.2008.10.009 　

    ISSN： 0022-3093

  46. Structural, vibrational and electrical characterization of PVA-NH(4)Br polymer electrolyte system Peer-reviewed

    M. Hema, S. Selvasekerapandian, A. Sakunthala, D. Arunkumar, H. Nithya

    PHYSICA B-CONDENSED MATTER　403　(17)　2740-2747　2008/08

    DOI： 10.1016/j.physb.2008.02.001 　

    ISSN： 0921-4526

Show all ︎Show first 5

Misc. 19

  1. Diffusion Constant Measurement for Ion Conductor Using Fringe Methods

    村上美和, ARUNKUMAR Dorai, NITHYA Hellar, 河村純一, 小俣孝久, 竹腰清乃理

    Abstracts. Annual Meeting of the NMR Society of Japan　62nd (CD-ROM)　2023

  2. Diffusion measurement in high conducting garnet type solid electrolyte

    Dorai Arunkumar, Naoaki Kuwata, Kawamura Junichi, Kataoka Kunimitsu, Junji Akimoto

    第22回マイクロイメジング研究会講演要旨集　53-54　2018/08

  3. Diffusion time dependence of lithium diffusion coefficient in Li7-xLa3Zr2-xTaxO12 measured by PFG-NMR

    Dorai Arunkumar, Naoaki Kuwata, Reiji Takekawa, Junichi Kawamura, Kunimitsu Kataoka, Junji Akimoto

    第21回超イオン導電体物性研究会講演要旨集　31-34　2018/06

  4. Diffusion coefficient of Li in garnet-type single crystal measured by pulsed field gradient NMR

    Naoaki Kuwata, Dorai Arunkumar, Reiji Takekawa, Junichi Kawamura, Kunimitsu Kataoka, Junji Akimoto

    Meeting Abstracts of the Physical Society of Japan　73　(1)　1428-1428　2018/03

    Publisher: The Physical Society of Japan

    DOI： 10.11316/jpsgaiyo.73.1.0_1428 　

  5. Measurement of ionic migration by NMR

    Shotrao Endo, Reiji Takekawa, Dorai Arunkumar, Gen Hasegawa, Junichi Kawamura

    日本物理学会 第 73 回年次大会 講演概要集　73　(1)　1427-1427　2018/03

    ISSN： 2189-079X

  6. ガーネット型Li7-xLa3Zr2-xTaxO12単結晶のPFG-NMRによるLi拡散係数測定

    NAOAKI KUWATA, DORAI ARUNKUMAR, TAKEKAWA REIJI, KAWAMURA JUNICHI, KATAOKA KUNIMITSU, AKIMOTO JUNJI

    第43回 固体イオニクス討論会講演要旨集　16-17　2017/12

  7. Electrical Conductivity and 19F Relaxation Studies on Polycrystalline PbSnF4

    Dorai Arunkumar, Naoaki Kuwata, Junichi Kawamura

    第43回 固体イオニクス討論会講演要旨集　112-113　2017/12

  8. Visualization of Paramagnetic effect in ionic liquid using 1H MRI

    Dorai Arunkumar, Yoshiki Iwai, Naoaki Kuwata, Junichi Kawamura

    第２１回ＮＭＲマイクロイメージング研究講演要旨集　2017/08

  9. In situ NMR of Lithium Battery

    Junichi Kawamura, Nithya Hellar, Reiji Takekawa, Arunkumar Dorai, Naoaki Kuwata

    Tohoku University Cryogenic Science Center Report　18　6-9　2017

  10. イオン液体[BMIM][BF4]‐水系のバルクと表面の構造

    清水良介, D. Arunkumar, 武川玲治, 桑田直明, 田邉匡生, 河村純一

    第19回 超イオン導電体物性研究会講演要旨集　5-13　2016/09

  11. PGSE NMR studies on room temperature ionic liquids CnMIM-TFSI

    Arunkumar Dorai, Reiji Takekawa, Nithya Hellar, Naoaki Kuwata, Junichi Kawamura

    E-Proceedings of the 14th Asian Conference on Solid State Ionics (ACSSI - 14)　217-225　2014

  12. Sr2MgMoO6-δ: thermal, structural and electrical analysis

    ARUN KUMAR DORAI, SUN-DONG KIM, JI-HAENG YU, IN-SUB HAN, DOO-WON SEO, SANG-KUK WOO, KIM SEYOUNG

    Proceedings of the 13th Asian Conference on Solid State Ionics (ACSSI - 13)　246-252　2012

  13. Conductivity, thermal and morphological behavior of lithium ion conducting polymer electrolyte based on P(ECH-EO)

    H. Nithya, S. Selvasekarapandian, P. Christopher Selvin, D. Arun Kumar, M. Hema, A. Sakunthala

    Proceedings of the International Conference on Advanced Materials and its Applications (ICAMA - 2011)　355-362　2011

  14. Structural and conductivity analysis of lanthanum fluoride nanoparticles and nanorods

    D. Arun Kumar, S. Selvasekarapandian, H. Nithya, A. Sakunthala, M. Hema

    Proceedings of the International Conference on Advanced Materials and its Applications (ICAMA - 2011)　168-176　2011

  15. Thermal and conductivity studies on P(ECH-EO) – LiClO4 polymer electrolyte gelled with γ – Butyrolactone

    H. Nithya, S. Selvasekarapandian, D. Arun Kumar, A. Sakunthala, M. Hema, an

    Proceedings of the 12th Asian Conference on Solid State Ionics (ACSSI - 12)　2010

  16. Synthesis and conductivity analysis of cerium fluoride nanoparticles

    D. Arun Kumar, S. Selvasekarapandian, H. Nithya, A. Sakunthala, M. Hema, N Vidyanand Singh, B K Mehta

    Proceedings of the 12th Asian Conference on Solid State Ionics　2010

  17. Raman and DSC studies on PVA doped with NH4Br Peer-reviewed

    M.Hema, S.Selvasekarapandian, A.Sakunthala, D.Arun Kumar, H.Nithya, O.Kamishima, J.Kawamura

    Proceedings of 11th Asian conference on Solid State Ionics　781-788　2008/06

  18. Vibrational, ac impedance and dielectric spectroscopy studies on polyaniline doped LiClO4

    H. Nithya, P. Christopher Selvin, A. Sakunthala, D. Arun Kumar, M. Hema, S. Selvasekarapandian

    Proceedings of the 11th Asian Conference on Solid State Ionics (ACSSI - 11)　2008

  19. Electrical conductivity studies on proton conducting polymer electrolytes based on Poly (vinyl acetate)

    D. Arun Kumar, T. Savitha, S. Selvasekarapandian, R. Baskaran

    Proceedings of the 10th Asian Conference on Solid State Ionics　2006

Show all ︎Show first 5

Presentations 70

  1. Fluorine diffusion coefficient in a high fluoride ion conducting solid electrolyte measured by PFG-NMR

    Arunkumar Dorai, Miwa Murakami, Atsushi Mineshige, Reiji Takekawa, Takahisa Omata, Junichi Kawamura

    The 51st Solid State Ionics Symposium of Japan　2025/11/26

  2. Evaluation of Zinc battery degradation mechanism using MRI

    A. Dorai, Hellar Nithya, Okada Masaki, Omata Takahisa, Kawamura Junichi

    The 66th Battery Symposium of Japan　2025/11/19

  3. Investigation of ion dynamics in solid ion conductors in different time and spatial scales

    A. Dorai, Kim Sangryun, Kuwata Naoaki, Kawamura Junichi

    第26回超イオン伝導体物性研究会　2025/06/05

  4. Analysis of reaction mechanism in MnO2 cathode by using NMR

    A. Dorai, N. Hellar, M. Okada, R. Takekawa, T. Omata, J. Kawamura

    The 92nd ECS Japan Annual Meeting　2025/03/19

  5. Rational design of Zn metal battery electrolytes

    S. Ko, N. Takenaka, T. Sakata, T. Shimada, A. Dorai, S. Nishimura, Y. Yamada, N. Kuwata, J. Kawamura, A. Kitada, A. Yamada

    The 92nd ECS Japan Annual Meeting　2025/03/18

  6. Multilateral analysis of the ion dynamics in the solid electrolyte

    M. Murakami, A. Mineshige, T. Omata, A. Dorai, K. Takegoshi

    The 92nd ECS Japan Annual Meeting　2025/03/18

  7. Evaluation of ion dynamics in solid electrolytes on varying time scales Invited

    A. Dorai

    International Conference on “Smart and Advanced Materials for Biomedical, Energy and Environmental Applications” (SAMBEEA-2025)　2025/03/13

  8. Investigating the reaction process in the nanoscale in rechargeable batteries using NMR Invited

    A. Dorai, Hellar Nithya, Junichi Kawamura

    One Day International Conference on “Exploring the Trends and Innovations in Materials Science (ICETIMS-2025)　2025/02/27

  9. Evaluation of ion conduction mechanism in a high fluoride conducting solid electrolyte

    A. Dorai, M. Murakami, A. Mineshige, R. Takekawa, K. Takegoshi, T. Omata, J. Kawamura

    The 50th Solid State Ionics Symposium of Japan　2024/12/09

  10. Mixed Protonic-electronic Conduction in Indium Oxyhydroxide InO(OH) by Excess Proton Dissolution

    T. Yamasaki, A. Dorai, T. Omata

    The 50th Solid State Ionics Symposium of Japan　2024/12/09

  11. Rational design of Zn metal battery electrolytes

    S. Ko, T. Sakata, T. Shimada, A. Dorai, S. Nishimura, N. Takenaka, Y. Yamada, N. Kuwata, J. Kawamura, A. Kitada, A. Yamada

    The 65th Battery Symposium of Japan　2024/11/20

  12. Evaluation of metal ion dissolution from MnO2 cathode using MRI

    DORAI ARUNKUMAR, HELLAR NITHYA, OKADA MASAKI, OMATA TAKAHISA, KAWAMURA JUNICHI

    The 65th Battery Symposium of Japan　2024/11/21

  13. The Renaissance of Electric Vehnicles Invited

    A. Dorai

    Special Lecture (online) at Vellore Institute of Technology, Vellore, India　2024/11/11

  14. Fluoride ion conduction mechanism Ba1-xSnxF4 solid electrolyte studied using 19F PFG-NMR

    Arunkumar Dorai, Miwa Murakami, Atsushi Mineshige, Reiji Takekawa, Kiyonori Takegoshi, Takahisa Omata, Junichi Kawamura

    24th International Conference on Solid State Ionics (SSI-24)　2024/07/16

  15. An Introduction to Solid State Ionics Invited

    Dorai Arunkumar

    Invitational Seminar at Vellore Institute of Technology, Chennai, India　2024/04/26

  16. Evaluating active material dissolution in Lithium - Sulfur batteries using magnetic resonance imaging Invited

    Dorai Arunkumar, Kawamura Junichi, Omata Takahisa

    3rd International Symposium on the Frontiers of Functional Materials Research　2024/04/08

  17. Insight into Ionic Motion in Lithium Battery Electrolytes from NMR Invited

    Dorai Arunkumar

    Faculty Development Program on “Visionary Voices: Shaping the Future of Research”, PSGR Krishnammal College for Women, Coimbatore, INDIA　2024/04/02

  18. Rechargeable Batteries for automotive applications: The past and the Future Invited

    Dorai Arunkumar

    International conference on Applications of Rechargeable Batteries for Electric Vehicle　2024/03/07

  19. Awareness program on higher education and job opportunities in science-Abroad Invited

    A. Dorai

    Awareness Program on Higher Education and Job Opportunities　2024/02/24

  20. Fluoride ion dynamics in high conducting electrolytes studied using NMR Invited

    Arunkumar Dorai, Hellar Nithya, Takahisa Omata, Junichi Kawamura

    18th Asian Conference on Solid State Ionics (ACSSI-2024)　2024/02/19

  21. Structural and ion dynamic studies on concentrated electrolytes for zinc batteries using NMR

    Arunkumar Dorai, Nithya Hellar, Reiji Takekawa, Junichi Kawamura, Takahisa Omata

    The 64th Battery Symposium of Japan　2023/11/28

  22. Various Types of Batteries and its uses Invited

    Dorai Arunkumar

    Special Lecture at Arignar Anna Government Arts College, Cheyyar, Tamil Nadu, India　2023/08/17

  23. Research Approaches for Better Outcome Invited

    Dorai Arunkumar

    Faculty Development Program on Edifying Research Competence, Kamaraj college of engineering and technology, Madurai, INDIA　2023/06/30

  24. Assessing the reaction mechanism in lithium batteries using NMR Invited

    Dorai Arunkumar, Nithya Hellar, Kawamura Junichi

    International webinar on Advanced Nanomaterials for Emerging Applications　2023/03/06

  25. Fluoride Ion Dynamics studied using NMR in Tysonite structured fluoride ion conductors

    Arunkumar Dorai, Junichi Kawamura, Takahisa Omata

    17th Asian Conference on Solid State Ionics　2022/09/13

  26. Rechargeable batteries for Sustainable Energy Storage Invited

    Dorai Arunkumar, Nithya Hellar, Kawamura Junichi

    International Webinar on "Food and Energy: Towards Sustainability”　2022/04/11

  27. Insight into ion diffusion mechanism in highly conductive solid electrolytes using NMR Invited

    Dorai Arunkumar, Kuwata Naoaki, Kawamura Junichi

    INTERNATIONAL VIRTUAL CONFERENCE ON ADVANCED MATERIALS FOR SUSTAINABLE ENERGY AND ENVIRONMENT (ICANMEE-2022)　2022/02/18

  28. Applications of NMR in Battery Research Invited

    Dorai Arunkumar, Kawamura Junichi

    International Online Workshop on Materials Science and Computational Methods　2022/02/15

  29. In-situ observation of Mn2+ dissolution in LiMn2O4 by 1H MRI

    Nithya Hellar, Yoshiki Iwai, Arunkumar Dorai, Junichi Kawamura

    22nd International Society of Magnetic Resonance Conference　2021/08/25

  30. Evaluating the electrolyte degradation mechanism in Li-S batteries using 1H MRI

    Arunkumar Dorai, Junichi Kawamura, Takahisa Omata

    22nd International Society of Magnetic Resonance Conference　2021/08/24

  31. Rechargeable Batteries - Looking Back and Looking Forward Invited

    Dorai Arunkumar

    International Webinar on Rechargeable Batteries　2021/07/29

  32. “Lithium Ion Batteries - Present Status and Future Prospects” Invited

    Dorai Arunkumar

    Certificate Course On “Energy And Enviroment-A Pathway From Research To Industry”　2021/04/29

  33. Effect of Aliovalent doping in tysonite structured fluoride ion conductors

    Dorai Arunkumar, Kawamura Junichi

    The 46th Solid State Ionics Symposium in Japan　2020/12/08

  34. Visualization of polysulfide species using 1H MRI

    Arunkumar Dorai, Reiji Takekawa, Junichi Kawamura, Takahisa Omata

    The 61st Battery Symposium in Japan　2020/11/18

  35. High Conducting solid Electrolytes for fluoride ion batteries Invited

    Dorai Arunkumar, Junichi Kawamura

    Indo-UK International Virtual Conference on Advanced Nanomaterials for Energy and Environmental Applications (ICANEE-2020), Alagappa University, Karaikudi, INDIA　2020/09/17

  36. Spectroscopic Techniques for Energy Materials Characterization Invited

    Dorai Arunkumar, Nithya Hellar

    International Webinar Advanced Materials for Energy devices, The Standard Fireworks Rajaratnam College for women, Sivakasi, India　2020/07/23

  37. Electric Vehicles - The future of transportation Invited

    Dorai Arunkumar

    International Webinar on Electric Vehicles - The future of transportation, St. Joseph`s Insitute of Technology, Chennai, India,　2020/07/08

  38. Lithium ion batteries - Progress and future challenges Invited

    Dorai Arunkumar

    International Webinar on Materials for Energy And Environmental Applications, Sacred Hearts College, Tirupattur, India　2020/06/24

  39. Next Generation Batteries and the challenges Invited

    Dorai Arunkumar

    Faculty development programe on Nanotechnology innovations in energy and biomedicine, organized by Kamaraj college of engineering and technology, Madurai, INDIA　2020/06/09

  40. メカニカルミリング処理がLi添加NH4MgF3のイオン伝導特性に及ぼす影響

    Kota Motohashi, Yosuke Matsugawa, Nakamura Takashi, Yuta Kimura, Dorai Arunkumar, Kawamura Junichi, Uchimoto Yoshiharu, Amezawa Koji

    The 87th Annual Meeting of the Electrochemical Society of Japan　2020/03/18

  41. Ion Dynamics of fluoride ion conducting solid electrolytes using NMR

    Arunkumar Dorai, Nithya Hellar, Junichi Kawamura

    The 87th Annual Meeting of the Electrochemical Society of Japan　2020/03/18

  42. Ionic Conduction in Hybrid Organic-Inorganic Perovskite Compounds NH4MgF3 and (NH4)2MgF4

    Kota Motohashi, Yosuke Matsukawa, Takashi Nakamura, Yuta Kimura, Naoaki Kuwata, Arunkumar Dorai, Hitoshi Takamura, Junichi Kawamura, Yoshiharu Uchimoto, Koji Amezawa

    The 22nd International Conference on Solid State Ionics (SSI-22), Pyeongchang, South Korea　2019/06/21

  43. In-situ 7Li NMR Imaging of solid gel polymer electrolyte in Li- ion battery

    Hellar Nithya, Yoshiki Iwai, Reiji Takekawa, Dorai Arunkumar, Naoki Kuwata, Junichi Kawamura

    The 22nd International Conference on Solid State Ionics (SSI-22), Pyeongchang, South Korea　2019/06/17

  44. Diffusion studies on fluoride ion conducting solid electrolyte RbSn2F5 using 19F NMR

    Arunkumar Dorai, Nithya Hellar, Naoaki Kuwata, Junichi Kawamura

    The 22nd International Conference on Solid State Ionics (SSI-22), Pyeongchang, South Korea　2019/06/20

  45. Diffusion Coefficient of Li in garnet-type LLZTO single crystal: pulsed field gradient-NMR spectroscopy

    Kuwata Naoaki, DoraiArunkumar, Reiji Takekawa, Kawamura Junichi, Kataoka Kunimitsu, Akimoto Junji

    The 59th Battery Symposium in Japan　2018/11/29

  46. Diffusion studies in fluoride ion conducting solid electrolytes International-presentation

    Dorai Arunkumar, Hellar Nithya, Naoaki Kuwata, Junichi Kawamura

    The 59th Battery Symposium　2018/11/28

  47. Diffusion measurement in high conducting garnet type solid electrolyte

    Arunkumar Dorai, Naoaki Kuwata, Junichi Kawamura, Kunimitsu Kataoka, Junji Akimoto

    The 22nd Meeting on NMR Microimaging　2018/08/21

  48. Fluoride ion dynamics in PbSnF4 measured by NMR and ionic conductivity International-presentation

    Arunkumar Dorai, Naoaki Kuwata, Junichi Kawamura

    The 16th Asian Conference on Solid State Ionics, Shanghai, China　2018/08/08

  49. Diffusion time dependence of lithium diffusion coefficient in Li7-xLa3Zr2-xTaxO12 measured by PFG-NMR

    Dorai Arunkumar, Naoaki Kuwata, Reiji Takekawa, Junichi Kawamura, Kunimitsu Kataoka, Junji Akimoto

    The 21st Meeting on Superionic Conductors　2018/06/01

  50. Measurement of ionic migration by NMR

    Shotrao Endo, Reiji Takekawa, Dorai Arunkumar, Gen Hasegawa, Junichi Kawamura

    2018/03

  51. Diffusion coefficient of Li in garnet-type single crystal measured by pulsed field gradient NMR

    Naoaki Kuwata, Dorai Arunkumar, Reiji Takekawa, Junichi Kawamura, Kunimitsu Kataoka, Junji Akimoto

    2018/03

  52. Ion Dynamics of Fluoride ion conducting solid electrolytes

    ARUNKUMAR DORAI

    3rd Tohoku University & NIMS GREEN collaborative symposium　2017/12/22

  53. Visualization of Paramagnetic effect in ionic liquid using 1H MRI

    Dorai Arunkumar, Yoshiki Iwai, Naoaki Kuwata, Junichi Kawamura

    The 21st Meeting on NMR Microimaging　2017/08/07

  54. Applications of NMR in material science Invited

    Dorai Arunkumar

    National Conference on Systematic Investigation on Structural, Morphological and Optical Properties of Materials (NCSI`16)　2016/12/01

  55. Physicochemical properties of binary mixtures of 1-Butyl 3-Methyl Imidazolium ionic liquids

    Arunkumar Dorai, Reiji Takekawa, Naoaki Kuwata, Junichi Kawamura

    The 15th Asian Conference on Solid State Ionics, Patna, India　2016/11/28

  56. Ion Dynamics studies on 1-Ethyl-3-Methylimidazolium Tetrafluoroborate

    Dorai Arunkumar, Nithya Hellar, Reiji Takekawa, Naoaki Kuwata, Junichi Kawamura

    National conference on Energy Devices, The Standard Fireworks Rajaratnam college for Women, Sivakasi, India　2016/11/23

  57. EFFECT OF PARAMAGNETIC METAL IONS ON 1H DIFFUSION IN TRIHEXYL TETRADECYL PHOSPHONIUM BENZOATE IONIC LIQUID

    Dorai Arunkumar, Mrutyunjay Panigrahi, Etsuro Shibata, Junichi Kawamura

    ECS PRiME 2016, Hawaii, USA　2016/10/05

  58. イオン液体[BMIM][BF4]‐水系のバルクと表面の構造

    清水良介, D. Arunkumar, 武川玲治, 桑田直明, 田邉匡生, 河村純一

    第19回 超イオン導電体物性研究会講演要旨集　2016/09

  59. Evaluation of the IL extraction mechanism of rare earth through NMR spectroscopy International-presentation

    Dorai Arunkumar, Panigrahi Mrutyunjay, Etsuro Shibata, Takashi, Nakamura, Junichi Kawamura

    International conference on Ionic Liquid Materials ILMAT-3　2015/12/11

  60. 1H MRI of Ionic liquid - rare earth complex

    Dorai Arunkumar, Yoshiki Iwai, Mrutyunjay Panigrahi, Etsuro Shibata, Takashi Nakamura, Junichi Kawamura

    Critical Metal Symposium　2015/10/28

  61. 1H NMR studies on complexes of rare earth ions with phosphonium based ionic liquid

    Dorai Arunkumar, Mrutyunjay Panigrahi, Etsuro Shibata, Takashi Nakamura, Junichi Kawamura

    Critical Metal Symposium　2015/10/28

  62. PGSE NMR studies on Room Temperature Ionic Liquids CnMIM TFSI

    Arunkumar Dorai, Reiji Takekawa, Nithya Hellar, Naoaki Kuwata, Junichi Kawamura

    The 14th Asian Conference on Solid State Ionics, Singapore　2014/06/25

  63. Sr2MgMoO6-δ: thermal, structural and electrical analysis

    ARUN KUMAR DORAI, SUN-DONG KIM, JI-HAENG YU, IN-SUB HAN, DOO-WON SEO, SANG-KUK WOO, KIM SEYOUNG

    13th Asian Conference on Solid State Ionics (ACSSI - 13)　2012/07/18

  64. Conductivity, thermal and morphological behavior of lithium ion conducting polymer electrolyte based on P(ECH-EO)

    H. Nithya, S. Selvasekarapandian, P. Christopher Selvin, D. Arun Kumar, M. Hema, A. Sakunthala

    International Conference on Advanced Materials and its Applications (ICAMA - 2011)　2011/03/03

  65. Structural and conductivity analysis of lanthanum fluoride nanoparticles and nanorods

    D. Arun Kumar, S. Selvasekarapandian, H. Nithya, A. Sakunthala, M. Hema

    International Conference on Advanced Materials and its Applications (ICAMA - 2011)　2011/03/04

  66. Synthesis and conductivity analysis of cerium fluoride nanoparticles

    D. Arun Kumar, S. Selvasekarapandian, H. Nithya, A. Sakunthala, M. Hema, N Vidyanand Singh, B K Mehta

    12th Asian Conference on Solid State Ionics　2010/05/04

  67. Thermal and conductivity studies on P(ECH-EO) – LiClO4 polymer electrolyte gelled with γ – Butyrolactone

    H. Nithya, S. Selvasekarapandian, D. Arun Kumar, A. Sakunthala, M. Hema, an

    12th Asian Conference on Solid State Ionics (ACSSI - 12)　2010/05/04

  68. Vibrational, ac impedance and dielectric spectroscopy studies on polyaniline doped LiClO4

    H. Nithya, P. Christopher Selvin, A. Sakunthala, D. Arun Kumar, M. Hema, S. Selvasekarapandian

    11th Asian Conference on Solid State Ionics (ACSSI - 11)　2008/06/10

  69. Raman and DSC studies on PVA doped with NH4Br

    M.Hema, S.Selvasekarapandian, A.Sakunthala, D.Arun Kumar, H.Nithya, O.Kamishima, J.Kawamura

    11th Asian conference on Solid State Ionics　2008/06/10

  70. Electrical conductivity studies on proton conducting polymer electrolytes based on Poly (vinyl acetate)

    D. Arun Kumar, T. Savitha, S. Selvasekarapandian, R. Baskaran

    10th Asian Conference on Solid State Ionics　2006/06/14

Show all Show first 5

Research Projects 1

  1. State of Art Electrolyte materials for Novel Room Temperature All Solid State Fluoride ion Batteries

    DORAI ARUNKUMAR

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 若手研究

    Category: 若手研究

    Institution: 東北大学

    2019/04/01 - 2023/03/31

    More details Close

    The ion transport properties of Tysonite structured (LaF3) fluoride ion conducting solid electrolytes prepared by mechanical milling technique is investigated using 19F NMR and ac impedance spectroscopy. Aliovalent doping (Pb,Sn,Ba) of the fluorite structured LaF3 has resulted in the increase in ionic conductivity of about 1 order, which is due to the increase in the unit cell volume as confirmed by XRD. The fluoride ion dynamics in aliovalent doped LaF3 is probed probed in a wide range of temperature ranging from RT~773K by using 19F NMR spectra, T1 relaxation time and Impedance Spectroscopy. From the temperature dependent NMR and impedance analysis it is confirmed that the ionic conductivity is contributed by the exchange of fluoride ions in the F1 and F2 sites at higher temperatures.

Teaching Experience 2

  1. APPLIED PHYSICS　ARIGNAR ANNA GOVERNMENT ARTS COLLEGE, CHEYYAR, TAMIL NADU, INDIA

  2. ELECTRICITY AND MAGNETISM　ARIGNAR ANNA GOVERNMENT ARTS COLLEGE, CHEYYAR, TAMIL NADU, INDIA