Details of the Researcher

PHOTO

Garavdorj Batnyagt
Section
International Center for Synchrotron Radiation Innovation Smart
Job title
Specially Appointed Assistant Professor(Research)
e-Rad No.
61034723

Education 4

  • Iwate University

    2020/04 - 2025/09

  • Iwate University

    2017/10 - 2019/09

  • Iwate University

    2016/10 - 2017/03

  • モンゴル国立大学　化学部

    2011/09 - 2015/06

Committee Memberships 1

  • The Electrochemical Society of Japan　Individual Member

    2021/10 - Present

Research Areas 1

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering) / Catalytic processes and resource chemistry /

Papers 9

  1. Synthesis and Performance Evaluation of Pt–M Fine Nanoparticles on High‐Surface‐Area Carbon Support for Enhanced Oxygen Reduction Reaction Activity in PEFC

    Garavdorj Batnyagt, Waka Nagano, Hidenobu Wakita, Koichi Ui, Tatsuya Takeguchi

    Energy Technology　2025/11

    DOI： 10.1002/ente.202500393 　

  2. Correlation between Surface Pt-Ru Bonding and CO Tolerance of PtRu/C PEFC Anode Catalysts Prepared Using a Relatively Large Surface Area Carbon Support

    Tatsuya Takeguchi, Pongtorn Dhupatemiya, Napan Narischat, Garavdorj Batnyagt, Thidarat Wongsawa, Shin R. Mukai

    Catalysis Letters　2025/10

    DOI： 10.1007/s10562-025-05177-4 　

  3. ORR durability study on Pt3.7Mn/KB, Pt3.9Co/KB and Pt3.7Ni/KB for heavy-duty vehicle operation

    Galindev Oyunbileg, Garavdorj Batnyagt, Waka Nagano, Hidenobu Wakita, Koichi Ui, Tatsuya Takeguchi

    Energy Advances　2025/06/20

    DOI： 10.1039/d5ya00059a 　

    ISSN： 2753-1457

    More details Close

    <jats:p>Since durability is a key challenge for the use of robust catalysts in fuel cell systems for heavy-duty vehicles (HDV, a durability target of 50 000 h) applications, the durability of various core–shell Pt-based alloy catalysts is evaluated.</jats:p>

  4. Effect of Annealing Time on Various PtNi/C Binary Alloy Catalysts for ORR in PEFCs

    Kazuki Yamaguchi, Batnyagt Garavdorj, Hidenobu Wakita, Koichi Ui, Tatsuya Takeguchi

    ECS Transactions　2024/09/27

    DOI： 10.1149/11405.0013ecst 　

    ISSN： 1938-5862 1938-6737

    More details Close

    <jats:p>Polymer electrolyte fuel cells (PEFCs) are used in automotive power supplies due to their advantages of low environmental impact and high energy conversion efficiency. However, Pt used for electrocatalysts is expensive and its activity and durability are problematic. In this study, the PtNi/C catalysts were prepared with different annealing times and the oxygen reduction reaction activity was evaluated. The linear sweep voltammograms and current-voltage curves showed that the PtNi/C catalysts annealing time for 60 min performed better than the commercial catalyst. This would be attributed to the internal alloying of Ni and better electronic structure due to the longer annealing time.</jats:p>

  5. Relationship between synthesis conditions and ORR activity of PtCo nanowire/C catalysts for PEFC cathodes

    Kousuke Shibata, Tatsuya Takeguchi, Hidenobu Wakita, Koichi Ui, Batnyagt Garavdorj

    ECS Transactions　2024/09/27

    DOI： 10.1149/11405.0021ecst 　

    ISSN： 1938-5862 1938-6737

    More details Close

    <jats:p>Nanowire (NW) structures have attracted attention as durable catalysts for the oxygen reduction reaction (ORR) due to their resistance to aggregation, unique morphology, and efficient electron conduction. However, NWs often suffer from limited structural stability, and there is a lack of research on their performance in membrane electrode assembly (MEA) studies. In this study, PtCo NW/C catalysts with various amounts of oleylamine (OAm) were prepared, and their oxygen reduction reaction (ORR) activity and durability were investigated by MEA and RDE testing conditions. XRD analysis and TEM observations showed that the prepared PtCo NWs were successfully alloyed,and PtCo NW alloys were observed. CV and LSV results showed that the PtCo NW/C OAm100 catalyst with 2 h of acid treatment had the best ORR activity. The I-V test results demonstrated that the PtCo NW/C OAm100 catalyst with 2 h of acid treatment had higher cell voltage, and cell performance was also excellent. It was found that the ORR activity of PtCo NW was improved by adding the appropriate amount of OAm.</jats:p>

  6. The Development of Uniform-Sized Pt-Based Binary Alloy Electrocatalysts for ORR in Polymer Electrolyte Fuel Cells

    Batnyagt Garavdorj, Oyunbileg Galindev, Hidenobu Wakita, Koichi Ui, Tatsuya Takeguchi

    ECS Transactions　2024/09/27

    DOI： 10.1149/11405.0057ecst 　

  7. Synthesis of catalysts with fine platinum particles supported by high-surface-area activated carbons and optimization of their catalytic activities for polymer electrolyte fuel cells

    Md. Mijanur Rahman, Kenta Inaba, Garavdorj Batnyagt, Masato Saikawa, Yoshiki Kato, Rina Awata, Byambasuren Delgertsetsega, Yasuo Kaneta, Kotaro Higashi, Tomoya Uruga, Yasuhiro Iwasawa, Koichi Ui, Tatsuya Takeguchi

    RSC Advances　2021/06/08

    DOI： 10.1039/d1ra02156g 　

    ISSN： 2046-2069

    More details Close

    <p>Herein, we demonstrated that carbon-supported platinum (Pt/C) is a low-cost and high-performance electrocatalyst for polymer electrolyte fuel cells (PEFCs).</p>

  8. Development of Catalyst with Optimum Calcination Temperature for the Application of Zinc-Air Battery

    Yoshiki Kato, Md Mijanur Rahman, Masato Saikawa, Rina Awata, Yuji Ono, Garavdorj Batnyagt, Byambasuren Delgertsetsega, Tatsuya Takeguchi

    ECS Transactions　2021/05/07

    DOI： 10.1149/10205.0029ecst 　

    ISSN： 1938-5862 1938-6737

    More details Close

    <jats:p>Zinc-air batteries (ZABs) have several challenges that hamper large-scale commercialization because of cost, charge/discharge performance of the cathode catalyst. To overcome these problems, perovskite oxides such as LaSr<jats:sub>3</jats:sub>Fe<jats:sub>3</jats:sub>O<jats:sub>10</jats:sub> (LSFCO) catalysts, were prepared using the complex polymerization synthesis method to investigate the relationship between catalyst activity and calcination temperature. The particle diameter of the prepared LSFCO catalysts and the crystalline structure of the perovskite samples were increased with increasing calcination temperature. In the case of 1400ºC, the highest catalytic activity of the LSFCO catalyst was derived from CV analyses and the constant current charge/discharge measurement for ZABs. It is suggested that the high catalytic activity of the LSFCO catalyst can be obtained by providing a high calcination temperature with larger particles.</jats:p>

  9. Synthesis and electrocatalytic activity towards oxygen reduction reaction of gold-nanostars

    Oyunbileg G, Batnyagt G, Enkhsaruul B, T Takeguchi

    Mongolian Journal of Chemistry　2018/02/13

    DOI： 10.5564/mjc.v18i44.935 　

    ISSN： 2414-0082 2226-6739

    More details Close

    <jats:p>The oxygen reduction reaction (ORR) is a characteristic reaction which determines the performance of fuel cells which convert a chemical energy into an electrical energy. Aims of this study are to synthesize Au-based nanostars (AuNSs) and determine their preliminary electro-catalytic activities towards ORR by a rotating-disk electrode method in alkaline electrolyte. The images obtained from a scanning electron microscope (SEM) and a transmission electron microscope (TEM) analyses confirm the formation of the star-shaped nanoparticles. Among the investigated nanostar catalysts, an AuNS5 with smaller size and a few branches showed the higher electrocatalytic activity towards ORR than other catalysts with a bigger size. In addition, the electron numbers transferred for all the catalysts are approximately two. The present study results infer that the size of the Au-based nanostars may influence greatly on their catalytic activity. The present study results show that the further improvement is needed for Au-based nanostar catalysts towards the ORR reaction.</jats:p>

Show all ︎Show first 5

Presentations 10

  1. The Development of Uniform-Sized Pt-Based Binary Alloy Electrocatalysts for ORR in Polymer Electrolyte Fuel Cells

    Batnyagt Garavdorj, Oyunbileg Galindev, Hidenobu Wakita, Koichi Ui, and Tatsuya Takeguchi

    PRiME 2024, 9th Joint Meeting with ECS　2024/10/08

  2. Correlation Between Platinum Loading and ORR Activity of PtCo Nanoparticles on Acetylene Black Carbon Supports

    Tabassum Hasnat Reshmi, Tatsuya Takeguchi, Garavdorj Batnyagt, Koichi Ui

    The 66th Battery Symposium in Japan　2025/11/20

  3. PEFC用Ti4O7-C担体担持カソード触媒のORR活性と耐久性における合成条件の最適化

    住山 瑠基、竹口 竜弥、Batnyagt Garavdorj、宇井 幸一

    The 66th Battery Symposium in Japan　2025/11/20

  4. 高比表面積炭素担体に担持させたPtNi ナノワイヤー触媒の電気化学的特性評価とPt担持量の最適化

    佐藤応介、竹口 竜弥、Garavdorj Batnyagt、宇井幸一

    The 66th Battery Symposium in Japan　2025/11/20

  5. Improvement in uniformly distributed Pt-based binary alloy catalysts towards the oxygen reduction reaction in polymer electrolyte fuel cells

    Garavdorj Batnyagt, Hidenobu Wakita, Koichi Ui, and Tatsuya Takeguchi

    The 91st ECSJ Annual Meeting　2024/03/14

  6. Durability and Performance of Pt-M Nanowires as Cathode Catalyst under MEA Stack Conditions

    Garavdorj Batnyagt, Hidenobu Wakita, Koichi Ui, and Tatsuya Takeguchi

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

  7. Durability and Performance of Pt-M Nanowires as Cathode Catalysts under PEFC Operating Conditions

    Garavdorj Batnyagt, Takumi Yoshida, Hidenobu Wakita, Koichi Ui, and Tatsuya Takeguchi

    The 90th ECSJ Annual Meeting　2023/03/29

  8. Improved Activity of High Surface Area Pt-Based Nanowires as Cathode Catalysts under PEFC Operating Conditions

    Garavdorj Batnyagt, Takumi Yoshida, Masato Saikawa, Md. Mijanur Rahman, Hidenobu Wakita, and Tatsuya Takeguchi

    33rd Topical Meeting of the International Society of Electrochemistry　2022/11/27

  9. Oxygen reduction reaction activity of Pt-Ni alloy nanowire catalyst supported on high surface area carbon

    Garavdorj Batnyagt, Takumi Yoshida, Masato Saikawa, Md. Mijanur Rahman, Koichi Ui, and Tatsuya Takeguchi

    The 89th ECSJ Spring meeting　2022/03/17

  10. Electrocatalytic activity for the oxygen reduction reaction of PtCo-M/C nanoparticles with enhanced ECSA

    Joint Meeting of the Tohoku Area Chemistry Societies 2019　2019/09/21

Show all Show first 5