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Graduate School of Engineering Science Department of Mathematical Science and Electrical-Electronic-Computer Engineering Electrical and Electronic Engineering Course |
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KUMAGAI Seiji
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Research Interests 【 display / non-display 】
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Power Engineering
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Electrical Materials Engineering
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Environmental and Energy Enginnering
Graduating School 【 display / non-display 】
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1991.04-1995.03
Akita University Faculty of Mining Department of Electrical and Electronic Engineering Graduated
Graduate School 【 display / non-display 】
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1995.04-1997.03
Akita University Graduate School, Division of Mining Master's Degree Program Completed
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1997.04-2000.03
Akita University Graduate School, Division of Mining Doctor's Degree Program Completed
Campus Career 【 display / non-display 】
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2018.01-Now
Akita University Professor
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2011.04-2017.12
Akita University Associate Professor
Academic Society Affiliations 【 display / non-display 】
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1998.01-Now
United States
IEEE
Research Areas 【 display / non-display 】
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Power engineering / Energy storage, secondary batteries, capacitors
Thesis for a degree 【 display / non-display 】
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Fundamental Research on Polymeric Materials Used in Outdoor High Voltage Insulation
Seiji Kumagai
2000.03
Single author
Research Achievements 【 display / non-display 】
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Performance of Supercapacitor Using Carbon Electrode Prepared via Microwave Activation of Japanese Distilled Liquor Waste
Daisuke Tashima, Akio Izaki, Takuya Eguchi, Toshiki Tsubota, Seiji Kumagai
International Journal of the Society of Materials Engineering for Resources ( The Society of Materials Engineering for Resources of JAPAN ) 668 2025.12 [Refereed]
Research paper (journal) Domestic Co-author
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Accelerated Aging of Electric Double-layer Capacitor Cells under Increased Cell Voltage and Temperature
Seiji Kumagai, Yugo Kanamoto, Cheng Jie Chng, Yusuke Abe, Mahmudul Kabir, Takuya Eguchi, Daisuke Tashima
Journal of Energy Storage ( Elsevier ) 137 118522 2025.11 [Refereed]
Research paper (journal) Domestic Co-author
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Cycling Stability of Lithium-ion Batteries with Pressure-treated NCM811 Cathodes
Yusuke Abe, Yuki Kumagai, Mahmudul Kabir, Seiji Kumagai
Electrochemistry Communications ( Elsevier ) 178 108002 2025.09 [Refereed]
Research paper (journal) Domestic Co-author
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Hard carbon/Graphite/Nano-silicon Ternary Composite Anode for High-performance Li-ion Capacitors
Cheng Jie Chng, Yusuke Abe, Seiji Kumagai
Journal of Power Sources ( Elsevier ) 642 236930 2025.06 [Refereed]
Research paper (journal) Domestic Co-author
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Cheng Jie Chng, Yusuke Abe, Seiji Kumagai
Advanced Energy and Sustainability Research ( Wiley ) 6 ( 1 ) 2400238 2025.01 [Refereed] [Invited]
Research paper (journal) Domestic Co-author
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Rice Husk-derived Positive Electrode Materials for Lithium-ion Capacitors
Seiji Kumagai
Electrical Review 103 ( 4 ) 56 - 60 2018.04
Introduction and explanation (commerce magazine) Single author
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Working Mechanisms and Electrodes Materials of Lithium-ion Capacitors
Seiji KUMAGAI
62 ( 12 ) 22 - 26 2017.12
Introduction and explanation (commerce magazine) Single author
◆Original paper【 display / non-display 】
◆Introduction and explanation【 display / non-display 】
Books 【 display / non-display 】
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Seiji Kumagai, Daisuke Tashima
MDPI Books 2020.08 ISBN: 9783039367221
Technological development of energy storage devices is now ongoing worldwide for mitigating carbon dioxide emissions to combat global warming. Several industrially promising sectors such as automobiles, renewable energies, power quality management, and mobile gadgets require high-performance and low-cost energy storage devices. Electrochemical capacitors have been accepted as the key elements for realizing charge–discharge cycling with high power density, high efficiency, and long life. Electric double-layer capacitors, pseudocapacitors, and hybrid capacitors, which can be called supercapacitors, are typical modern electrochemical capacitors intended for energy storage.........
Industrial Property 【 display / non-display 】
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RECYCLED POSITIVE-ELECTRODE MATERIAL, METHOD FOR PRODUCING SAME, METHOD FOR USING RECYCLED POSITIVE-ELECTRODE MATERIAL, RECYCLED POSITIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
Patent
Industrial Property No PCT/JP2023/019970 Unexpectedly No WO2023/243385
Application date： 2023.05.29
Publication date： 2023.12.21
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RECYCLED POSITIVE-ELECTRODE MATERIAL, METHOD FOR PRODUCING SAME, METHOD FOR USING RECYCLED POSITIVE-ELECTRODE MATERIAL, RECYCLED POSITIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
Patent
Industrial Property No 2022-165994 Unexpectedly No 2023-183355
Application date： 2022.10.17
Publication date： 2023.12.27
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RECYCLED CATHODE MATERIAL PRECURSOR, RECYCLED CATHODE MATERIAL, METHOD FOR MANUFACTURING THEM, AND RECYCLED LITHIUM ION SECONDARY BATTERY
Patent
Industrial Property No PCT/JP2022/024041 Unexpectedly No WO 2022/270393 A1
Application date： 2022.06.16
Publication date： 2022.12.29
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RECYCLED POSITIVE-ELECTRODE MATERIAL, METHOD FOR PRODUCING SAME, METHOD FOR USING RECYCLED POSITIVE-ELECTRODE MATERIAL, RECYCLED POSITIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
Patent
Industrial Property No 2022-096429
Application date： 2022.06.15
Academic Awards Received 【 display / non-display 】
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Scientific Reports Top 100 in Materials Science - 2022
2023.03.12 Springer Nature Role of SiOx in Rice-husk-derived Anodes for Li-ion Batteries
Winner： Yusuke Abe, Masahiro Tomioka, Mahmudul Kabir, Seiji Kumagai
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Yamazaki Prize, The Society of Materials Engineering for Resources of Japan
2019.06.25
Winner： Seiji Kumagai
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Best Poster Award (ICRERA 2018, Paris)
2018.10.21
Winner： Takuya Eguchi, Daisuke Tashima, Masumi Fukuma, Seiji Kumagai
Grant-in-Aid for Scientific Research 【 display / non-display 】
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Creation of ultra-high-density energy storage capacitors, and the interface and bulk phenomena of Si particles-Li-electrolyte
Grant-in-Aid for Scientific Research(A)
Project Year： 2025.04 - 2028.03 Investigator(s): Seiji Kumagai
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Grant-in-Aid for Scientific Research(B)
Project Year： 2024.04 - 2027.03
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Grant-in-Aid for Scientific Research(B)
Project Year： 2022.04 - 2025.03
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Grant-in-Aid for Scientific Research(B)
Project Year： 2019.04 - 2022.03
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Grant-in-Aid for Scientific Research(C)
Project Year： 2018.04 - 2021.03
Presentations 【 display / non-display 】
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Impact of Electrochemical Preconditioning of Highly Porous Activated Carbon Cathode on Si-based Li-ion Capacitors
Cheng Jie Chng, Yusuke Abe, Seiji Kumagai
8th International Conference on Advanced Capacitors (ICAC2025) (New Taipei City, Taiwan) 2025.12 - 2025.12
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Electrochemical Characteristics of Lithium-ion Capacitors Using Binder-Coated Si Negative Electrode
Takuya Eguchi, Shogo Kawamata, Reiichi Chiba, Seiji Kumagai
8th International Conference on Advanced Capacitors (ICAC2025) (New Taipei City, Taiwan) 2025.12 - 2025.12
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Effect of Electrode Heat Treatment on the Rate Characteristics and Cycle Characteristics of Si Electrodes Using Kenaf-Derived Lignin Binder in Half Cells
Tatsuki Hozumi, Reiichi Chiba, Seiji Kumagai, Daisuke Tashima, Takuya Eguchi
8th International Conference on Advanced Capacitors (ICAC2025) (New Taipei City, Taiwan) 2025.12 - 2025.12
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Composite Anode of Waste Solar Panel-derived Glass and Graphite for the Application of Lithium-ion Batteries
Takuya Eguchi, Reiich Chiba, Yusuke Abe, Daisuke Tashima, Seiji Kumagai
10th International Conference on Materials Engineering for Resources (ICMR2025 AKITA) (Akita) 2025.10 - 2025.10
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Effect of Al and Fe Impurities on the Electrochemical Performance of Cathode Active Material Recovered from Waste Lithium-ion Batteries
Yusuke Misawa, Yusuke Abe, Ryoei Watanabe, Tatsuya Yodose, Seiji Kumagai
10th International Conference on Materials Engineering for Resources (ICMR2025 AKITA) (Akita) 2025.10 - 2025.10
Academic Activity 【 display / non-display 】
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2025.10-Now
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2025.04-2026.03
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2025.04-2026.03
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2025.04-2026.03
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2025.04-2026.03
Recommended URL 【 display / non-display 】
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Kumagai Laboratory, Department of Mathematical Science and Electrical-Electronic-Computer Engineering, Akita University
http://www.ee.akita-u.ac.jp/~kumagai-lab/
Electrical Engineering