研究者詳細

顔写真

プジヤリ　アルヴアインド
Pujari Arvind
Pujari Arvind
所属
金属材料研究所　融合研究部　先端・萌芽研究部門
職名
助教
学位

  • PhD （University of Cambridge）

e-Rad 研究者番号
51054001

経歴 6

  • 2026年8月 ～ 継続中
    東北大学　金属材料研究所　テニュアトラック助教、独立研究グループ

  • 2025年2月 ～ 2026年8月
    Illumion Ltd.

  • 2021年10月 ～ 2024年12月
    ケンブリッジ大学　Cavendish Laboratory, Department of Physics

  • 2024年6月 ～ 2024年8月
    東京科学大学

  • 2019年5月 ～ 2019年7月
    Purdue University

  • 2018年5月 ～ 2018年7月
    Indian Institute of Technology Gandhinagar

︎全件表示 ︎最初の5件までを表示

学歴 3

  • ケンブリッジ大学　Cavendish Laboratory, Department of Physics　博士（理学）

    2021年10月 ～ 2024年12月

  • ケンブリッジ大学　Cavendish Laboratory, Department of Physics　Masters of Research (MRes)

    2020年10月 ～ 2021年9月

  • Indian Institute of Technology Madras　金属材料工学科 / 金属材料工学　Bachelors of Technology (B. Tech)

    2016年7月 ～ 2020年7月

研究分野 1

  • ナノテク・材料 / エネルギー化学 /

受賞 6

  1. PhD Student Award

    2024年12月　Cambridge Philosophical Society

  2. サマー・プログラム

    2024年7月　日本学術振興会

  3. Cambridge International Scholarship

    2020年10月　Cambridge Commonwealth and International Trust

  4. EPSRC PhD Fellowship

    2020年10月　UK Research and Innovation (UKRI)

  5. Dr Shankar Dayal Sharma President of India Gold Medal

    2020年10月　Indian Institute of Technology Madras

  6. Innovative Student Project Award

    2020年10月　Indian National Academy of Engineering (INAE)

︎全件表示 ︎最初の5件までを表示

論文 18

  1. Reconstructing the electrochemistry of lithium-ion batteries through operando diffuse reflectance spectroscopy 査読有り

    Arvind Pujari, Gratsiela Kostova, Hwee Jien Tan, Atsunori Ikezawa, Hajime Arai, Michael De Volder

    Energy & Environmental Science　19　(10)　3236-3248　2026年

    出版者・発行元： Royal Society of Chemistry (RSC)

    DOI： 10.1039/d6ee00376a 　

    ISSN：1754-5692

    eISSN：1754-5706

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    Diffuse reflectance spectroscopy (DRS) is introduced as a low-cost optical technique to probe mechanisms in batteries in real time.

  2. Photobatteries: Prospects and fundamental limitations 査読有り

    Arvind Pujari, Kohei Shimokawa, Michael De Volder

    Joule　9　(3)　101869-101869　2025年3月

    出版者・発行元： Elsevier BV

    DOI： 10.1016/j.joule.2025.101869 　

    ISSN：2542-4351

  3. What Makes a Photobattery Light-Rechargeable? 査読有り

    Arvind Pujari, Byung-Man Kim, Hooman Abbasi, Myeong-Hee Lee, Neil C. Greenham, Michael De Volder

    ACS Energy Letters　9　(8)　4024-4031　2024年7月23日

    出版者・発行元： American Chemical Society (ACS)

    DOI： 10.1021/acsenergylett.4c01350 　

    ISSN：2380-8195

    eISSN：2380-8195

  4. Does Heat Play a Role in the Observed Behavior of Aqueous Photobatteries? 査読有り

    Arvind Pujari, Byung-Man Kim, Farheen N. Sayed, Kate Sanders, Wesley M. Dose, Angus Mathieson, Clare P. Grey, Neil C. Greenham, Michael De Volder

    ACS Energy Letters　8　(11)　4625-4633　2023年10月12日

    出版者・発行元： American Chemical Society (ACS)

    DOI： 10.1021/acsenergylett.3c01627 　

    ISSN：2380-8195

    eISSN：2380-8195

  5. Design strategy for integrated photo-rechargeable batteries with high energy density 査読有り

    Byung-Man Kim, Arvind Pujari, Sungtae Kim, Tae-Hyuk Kwon, Michael De Volder

    Energy Storage Materials　90　105417-105417　2026年8月

    出版者・発行元： Elsevier BV

    DOI： 10.1016/j.ensm.2026.105417 　

    ISSN：2405-8297

  6. Operation Limits of Integrated Photo‐Rechargeable Batteries 査読有り

    Byung‐Man Kim, Arvind Pujari, Hooman Abbasi, Weidong Xu, Yutong Han, Samuel D. Stranks, Michael De Volder

    Advanced Materials　2026年8月

    DOI： 10.1002/adma.74159 　

  7. Unveiling the Anomalous Expansion of Silicon-Carbon Composites Obtained by Chemical Vapor Infiltration Through Operando Charge Photometry and Dilatometry 査読有り

    Arvind Pujari, Alice J. Merryweather, Silke Berger, Johanna Poschenrieder, Stefan Haufe

    Journal of The Electrochemical Society　173　(9)　090508-090508　2026年5月6日

    出版者・発行元： The Electrochemical Society

    DOI： 10.1149/1945-7111/ae6400 　

    ISSN：0013-4651

    eISSN：1945-7111

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    Modern lithium-ion batteries increasingly incorporate pure silicon into the anode to boost energy density. However, practical deployment remains limited by silicon’s large cycling-induced volume changes, typically assessed by pouch cell dilatometry. While informative at the electrode-stack level, this method provides no direct insight into underlying particle-level behaviour. Here, we combine operando dilatometry with high-resolution charge photometry to correlate electrode-level expansion with single-particle swelling in state-of-the-art silicon anodes. We examined anode materials: (i) silicon-carbon (Si-C) composites prepared by silicon vapor deposition into porous carbon, and (ii) dense micron-sized silicon prepared by jet milling. Dilatometry revealed pronounced non-linear thickness evolution for Si–C composites, with reduced expansion at low state-of-charge, whereas micron-sized silicon exhibited linear expansion. Charge photometry reproduced these trends at the particle level, showing that the non-linear swelling of Si–C composites arises from internal porosity that delays external volume change during early lithiation. Dilatometry also captured significant first-cycle expansion irreversibility for both materials, while charge photometry showed largely reversible particle swelling, indicating that irreversibility originates from cell-level processes rather than intrinsic active material behaviour. Overall, these results establish charge photometry as a practical lab-based tool for resolving operando particle-scale chemo-mechanics and highlights the benefits of nano-engineered composite architectures for mitigating silicon expansion.

  8. Optimal Coin Cell Design for Operando Optical Characterisation of Lithium-Ion Batteries 査読有り

    Arvind Pujari, Alice J. Merryweather, Christoph Schnedermann

    Journal of The Electrochemical Society　2026年1月14日

    DOI： 10.1149/1945-7111/ae2f9e 　

  9. Operando Confocal Microscopy of Structured Battery Electrodes 査読有り

    Arvind Pujari, Kumar Raju, Atsuko Yaguchi, Yoshihiro Nishimura, Yuya Akimoto, Atsunori Ikezawa, Hajime Arai, Michael De Volder

    Journal of The Electrochemical Society　172　(7)　070514-070514　2025年7月1日

    出版者・発行元： The Electrochemical Society

    DOI： 10.1149/1945-7111/ade936 　

    ISSN：0013-4651

    eISSN：1945-7111

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    Fast-charging and high-energy density Li-ion batteries are crucial for accelerating electrification of the automotive sector. However, these batteries have competing requirements: high-energy density battery designs favour high areal loading electrodes, while fast charging requires the opposite to avoid mass transport limitations. Several electrode structuring techniques have been proposed to balance these requirements with the goal of achieving homogeneous state of charge (SoC) at high rates in high-loading electrodes. However, current techniques to study the effect of electrode structuring on heterogeneity within electrodes are expensive and difficult to perform. Here, we focus on operando cross-section confocal microscopy as a simple high-throughput technique to understand the state of charge heterogeneity of electrodes as a function of battery cycling rate. We use laser patterned electrodes as a model system to demonstrate the utility of cross-sectional microscopy for measuring reaction heterogeneity. Optical analysis shows that at moderate rates (∼1 C), there is significant heterogeneity in SoC between the top and bottom of normal electrodes. However, at the same rate the laser processed electrodes do not exhibit significant heterogeneity due to improved ion transport. The direct correlations between optical cross-section imaging and electrochemical performance will help establish confocal microscopy as a tool to optimize electrode structuring.

  10. Distinguishing between Photothermal and Photoelectric Effects in Li-Ion Batteries 査読有り

    Lifu Tan, Byung-Man Kim, Kohei Shimokawa, Su Jin Heo, Arvind Pujari, Michael De Volder

    ACS Electrochemistry　1　(6)　921-927　2025年2月7日

    出版者・発行元： American Chemical Society (ACS)

    DOI： 10.1021/acselectrochem.4c00212 　

    ISSN：2997-0571

    eISSN：2997-0571

  11. Photothermal Enhancement of Prussian Blue Cathodes for Li-Ion Batteries 査読有り

    Lifu Tan, Byung-Man Kim, Arvind Pujari, Ze He, Buddha Deka Boruah, Michael De Volder

    Nano Letters　24　(30)　9147-9154　2024年7月19日

    出版者・発行元： American Chemical Society (ACS)

    DOI： 10.1021/acs.nanolett.4c00752 　

    ISSN：1530-6984

    eISSN：1530-6992

  12. Identifying Current Collectors that Enable Light–Battery Interactions 査読有り

    Arvind Pujari, Byung‐man Kim, Neil C. Greenham, Michael De Volder

    Small Methods　2024年5月2日

    出版者・発行元： Wiley

    DOI： 10.1002/smtd.202301572 　

    ISSN：2366-9608

    eISSN：2366-9608

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    Abstract In recent years, there has been an increased focus on studying light–battery interactions in the context of operando optical studies and integrated photoelectrochemical energy harvesting. However, there has been little insight into identifying suitable “light‐accepting” current collectors for this class of batteries. In this study, fluorine‐doped tin oxide, indium‐tin oxide, and silver nanowire‐graphene films are analyzed along with carbon paper, carbon nanotube paper, and stainless‐steel mesh as current collectors for optical batteries. They are categorized into two classes – transmissive and non‐transmissive, based on the orientation of the light–electrode interaction. Various methods to prepare the electrode are highlighted, including drop casting and the fabrication of free‐standing electrodes. The optical and electrical properties of these current collectors as well as their electrochemical stability are measured using linear sweep voltammetry against zinc and lithium anodes. Finally, the rate performance and long‐term cycling stability of lithium manganese oxide (LiMn2O4) cathodes are measured against lithium anodes with these current collectors and their performance is compared. These results show which current collector to choose depends on the application and cell chemistry. These guidelines will assist in the design of future optical cells for in‐situ measurements and photoelectrochemical energy storage.

  13. Hydrogenated V 2 O 5 with Improved Optical and Electrochemical Activities for Photo‐Accelerated Lithium‐Ion Batteries 査読有り

    Yinan Lu, Holly Andersen, Ruiqi Wu, Alex M. Ganose, Bo Wen, Arvind Pujari, Tianlei Wang, Joanna Borowiec, Ivan P. Parkin, Michael De Volder, Buddha Deka Boruah

    Small　20　(14)　2023年11月21日

    出版者・発行元： Wiley

    DOI： 10.1002/smll.202308869 　

    ISSN：1613-6810

    eISSN：1613-6829

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    Abstract Solar power represents an abundant and readily available source of renewable energy. However, its intermittent nature necessitates external energy storage solutions, which can often be expensive, bulky, and associated with energy conversion losses. This study introduces the concept of a photo‐accelerated battery that seamlessly integrates energy harvesting and storage functions within a single device. In this research, a novel approach for crafting photocathodes is presented using hydrogenated vanadium pentoxide (H:V 2 O 5 ) nanofibers. This method enhances optical activity, electronic conductivity, and ion diffusion rates within photo‐accelerated Li‐ion batteries. This study findings reveal that H:V 2 O 5 exhibits notable improvements in specific capacity under both dark and illuminated conditions. Furthermore, it demonstrates enhanced diffusion kinetics and charge storage performance when exposed to light, as compared to pristine counterparts. This strategy of defect engineering holds great promise for the development of high‐performance photocathodes in future energy storage applications.

  14. Direct digital sensing of protein biomarkers in solution 査読有り

    Georg Krainer, Kadi L. Saar, William E. Arter, Timothy J. Welsh, Magdalena A. Czekalska, Raphaël P. B. Jacquat, Quentin Peter, Walther C. Traberg, Arvind Pujari, Akhila K. Jayaram, Pavankumar Challa, Christopher G. Taylor, Lize-Mari van der Linden, Titus Franzmann, Roisin M. Owens, Simon Alberti, David Klenerman, Tuomas P. J. Knowles

    Nature Communications　14　(1)　2023年2月6日

    出版者・発行元： Springer Science and Business Media LLC

    DOI： 10.1038/s41467-023-35792-x 　

    eISSN：2041-1723

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    Abstract The detection of proteins is of central importance to biomolecular analysis and diagnostics. Typical immunosensing assays rely on surface-capture of target molecules, but this constraint can limit specificity, sensitivity, and the ability to obtain information beyond simple concentration measurements. Here we present a surface-free, single-molecule microfluidic sensing platform for direct digital protein biomarker detection in solution, termed digital immunosensor assay (DigitISA). DigitISA is based on microchip electrophoretic separation combined with single-molecule detection and enables absolute number/concentration quantification of proteins in a single, solution-phase step. Applying DigitISA to a range of targets including amyloid aggregates, exosomes, and biomolecular condensates, we demonstrate that the assay provides information beyond stoichiometric interactions, and enables characterization of immunochemistry, binding affinity, and protein biomarker abundance. Taken together, our results suggest a experimental paradigm for the sensing of protein biomarkers, which enables analyses of targets that are challenging to address using conventional immunosensing approaches.

  15. Photo‐Enhanced Magnesium‐Ion Capacitors Using Photoactive Electrodes 査読有り

    Sul Ki Park, Buddha Deka Boruah, Arvind Pujari, Byung‐Man Kim, Michael De Volder

    Small　18　(38)　2022年8月21日

    出版者・発行元： Wiley

    DOI： 10.1002/smll.202202785 　

    ISSN：1613-6810

    eISSN：1613-6829

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    Abstract Off‐grid power sources are becoming increasingly important for applications ranging from autonomous sensor networks to fighting energy poverty. Interactions of light with certain classes of battery and capacitor materials have recently gained attention to enhance the rate performance or to even charge energy storage devices directly with light. Interestingly, these devices have the potential to reduce the volume and cost of autonomous power sources. Here, a light‐enhanced magnesium (Mg)‐ion capacitor is shown. The latter is interesting because of the large natural abundance of Mg and its ability to operate in low cost and non‐flammable aqueous electrolytes. Photoelectrodes using a combination of vanadium dioxide and reduced graphene oxide can achieve capacitance enhancements of up to 56% under light exposure alongside a 21% higher energy density of 20.5 mAh kg‐1.

  16. Modelling core-shell plasmonic nanoparticles as homogenous systems: An effective refractive index approach 査読有り

    Abhimanyu Swaroop, Arvind Pujari, Tiju Thomas

    Materialia　19　101183-101183　2021年9月

    出版者・発行元： Elsevier BV

    DOI： 10.1016/j.mtla.2021.101183 　

    ISSN：2589-1529

  17. Aluminium nanoparticles alloyed with other earth-abundant plasmonic metals for light trapping in thin-film a-Si solar cells 査読有り

    Arvind Pujari, Tiju Thomas

    Sustainable Materials and Technologies　28　e00250-e00250　2021年7月

    出版者・発行元： Elsevier BV

    DOI： 10.1016/j.susmat.2021.e00250 　

    ISSN：2214-9937

  18. Al–Cu core-shell nanoparticles as an alternative to noble metal plasmonics: A computational study 査読有り

    Arvind Pujari, Tiju Thomas

    Materials Chemistry and Physics　253　123419-123419　2020年10月

    出版者・発行元： Elsevier BV

    DOI： 10.1016/j.matchemphys.2020.123419 　

    ISSN：0254-0584

︎全件表示 ︎最初の5件までを表示

講演・口頭発表等 4

  1. Unveiling the Anomalous Expansion of Silicon-Carbon Composites Obtained by Chemical Vapor Infiltration Through Operando Charge Photometry and Dilatometry

    Arvind Pujari, Alice Merryweather, Silke Berger, Johanna Poschenrieder, Stefan Haufe

    International Meeting on Lithium Ion Batteries (IMLB), Montreal, Canada　2026年6月19日

  2. Can You Make Batteries for Operando Optical Measurements Without Sacrificing Performance?

    Arvind Pujari, Byungman Kim, Clare P Grey, Neil C Greenham, Michael De Volder

    MRS Fall Meeting, Boston, USA　2024年12月3日

  3. Decoupling Heat and Light in Aqueous Photobatteries

    Arvind Pujari, Byungman Kim, Neil C Greenham, Michael De Volder

    Winton-Kavli Cambridge-Berkeley Symposium　2023年7月15日

  4. Best Practices for Photo-Assisted Batteries: Decoupling Heat and Light

    Arvind Pujari, Byungman Kim, Clare P Grey, Neil C Greenham, Michael De Volder

    16th International Conference on Materials Chemistry, Dublin, Ireland　2023年7月1日

担当経験のある科目(授業) 1

  1. Engineering Mathematics (Vector Calculus, Probability, Linear Algebra)　University of Cambridge

社会貢献活動 1

  1. Cambridge Science Festival

    Make Batteries From Vegetables

    2022年5月10日 ～