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Proceedings Paper

Higher energy and safety of lithium-ion batteries with ionic liquid electrolyte
Author(s): Shinichi Komaba; Naoaki Yabuuchi; Yasushi Katayama; Takashi Miura
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Paper Abstract

Ionic liquid has been utilized as safe electrolyte solution for lithium-ion batteries. Reversible charge / discharge cycling of the graphite electrode in the ionic liquid has been achieved with polyacrylic acid polymer binder, which can suppress the organic cation intercalation to the graphite. Cycleability of the graphite-silicon composite electrodes prepared with polyacrylate binder was significantly improved in comparison to the conventional PVdF binder, and it has been demonstrated that the reversible cycling with 1000 mAh g-1 for 30 cycling test is possible in ionic liquid. The possibility of the safe and high-energy lithium-ion battery is discussed through the preliminary study on Li2MnO3-LiCo1/3Ni1/3Mn1/3O2 based positive electrode and graphite-silicon-polyacrylate composite negative electrode with the ionic liquid electrolyte.

Paper Details

Date Published: 29 April 2010
PDF: 7 pages
Proc. SPIE 7683, Energy Harvesting and Storage: Materials, Devices, and Applications, 76830F (29 April 2010); doi: 10.1117/12.855629
Show Author Affiliations
Shinichi Komaba, Tokyo Univ. of Science (Japan)
Naoaki Yabuuchi, Tokyo Univ. of Science (Japan)
Yasushi Katayama, Keio Univ. (Japan)
Takashi Miura, Keio Univ. (Japan)

Published in SPIE Proceedings Vol. 7683:
Energy Harvesting and Storage: Materials, Devices, and Applications
Nibir K. Dhar; Priyalal S. Wijewarnasuriya; Achyut Kumar Dutta, Editor(s)

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