Research and development activity on activated carbon for power storage devices

Research and development activity on activated carbon for power storage devices

Trends in research and the development of activated carbons is surveyed from information on patent application publications using international patent classification (IPC) (C01B 31/08, B01J 20/20, and so on) and Japan platform for patent information (J-PlatPat). The number of application publication...

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Bibliographische Detailangaben
Veröffentlicht in:Carbon (New York) 2021-04, Vol.175, p.612-612
Hauptverfasser: Miyazawa, Kunio, Yamagata, Kaori
Format: Artikel
Sprache:eng
Schlagworte:
Activated carbon
Batteries
Capacitors
Documents
Lithium
Lithium ions
Patent applications
R&D
Research & development
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Zusammenfassung:Trends in research and the development of activated carbons is surveyed from information on patent application publications using international patent classification (IPC) (C01B 31/08, B01J 20/20, and so on) and Japan platform for patent information (J-PlatPat). The number of application publications which relates to electric double-layer capacitors (EDLCs) or lithium ion capacitors (LICs) was about 500 between 1989 to 2017. It is found that the important issue for EDLCs or LICs was to increase their capacitance, and the number of patent applications relating to alkali activation is 20-30%, or more.
ISSN:0008-6223
1873-3891
DOI:10.1016/j.carbon.2021.01.076