Title:
NEGATIVE ELECTRODE AND METHOD FOR PRODUCING NEGATIVE ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2022/168474
Kind Code:
A1
Abstract:
The present invention is a negative electrode comprising a negative electrode current collector which has a roughened surface and a negative electrode active material layer which is provided on the negative electrode current collector, said negative electrode being characterized in that: the negative electrode active material layer contains negative electrode active material particles each of which has a compound of lithium, silicon, and oxygen and a complex compound with which a surface layer and a gap between the negative electrode active material particles are filled, in which at least a carbon atom and an oxygen atom are chemically bonded, and which is not alloyed with the negative electrode active material particles; and the ratio O/Si between the oxygen and the silicon which constitute the negative electrode active material particles falls within the range of 0.8-1.2. Thus, the present invention can provide a negative electrode which makes it possible to significantly increase capacity while maintaining battery characteristics.
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Inventors:
HIROSE TAKAKAZU (JP)
MATSUNO TAKUMI (JP)
OSAWA YUSUKE (JP)
SAKAI REIKO (JP)
KOIDE HIROYUKI (JP)
MATSUNO TAKUMI (JP)
OSAWA YUSUKE (JP)
SAKAI REIKO (JP)
KOIDE HIROYUKI (JP)
Application Number:
PCT/JP2021/047263
Publication Date:
August 11, 2022
Filing Date:
December 21, 2021
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
H01M4/136; H01M4/1397; H01M4/36; H01M4/38; H01M4/48; H01M4/58; H01M4/66
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Other References:
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A. HOHL, T. WIEDER, P. A. VAN AKEN, T. E. WEIRICH, G. DENNINGER, M. VIDAL, S. OSWALD, C. DENEKE, J. MAYER, AND H. FUESS, SOLIDS, vol. 320, 2003, pages 255
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MARIKO MIYACHIHIRONORI YAMAMOTOHIDEMASA KAWAI, J. ELECTROCHEM. SOC., vol. 154, 2007, pages A1112 - A1117
M. YAMADA, M. INABA, A. UEDA, K. MATSUMOTO, T. IWASAKI, T. OHZUKU, SOC., vol. 159, 2012, pages A1630
HYE JIN KIMSUNGHUN CHOISEUNG JONG LEEMYUNG WON SEOJAE GOO LEEERHAN DENIZYONG JU LEEEUN KYUNG KIMJANG WOOK CHOI, NANO LETT., vol. 16, 2016, pages 282 - 288
"The Latest Development Trends on Lithium-ion Batteries for xEV", 27 November 2020, CMC PUBLISHING, pages: 96 - 111
A. HOHL, T. WIEDER, P. A. VAN AKEN, T. E. WEIRICH, G. DENNINGER, M. VIDAL, S. OSWALD, C. DENEKE, J. MAYER, AND H. FUESS, SOLIDS, vol. 320, 2003, pages 255
V. KAPAKLIS, J. NON-CRYSTALLINE SOLIDS, vol. 354, 2008, pages 612
MARIKO MIYACHIHIRONORI YAMAMOTOHIDEMASA KAWAI, J. ELECTROCHEM. SOC., vol. 154, 2007, pages A1112 - A1117
M. YAMADA, M. INABA, A. UEDA, K. MATSUMOTO, T. IWASAKI, T. OHZUKU, SOC., vol. 159, 2012, pages A1630
HYE JIN KIMSUNGHUN CHOISEUNG JONG LEEMYUNG WON SEOJAE GOO LEEERHAN DENIZYONG JU LEEEUN KYUNG KIMJANG WOOK CHOI, NANO LETT., vol. 16, 2016, pages 282 - 288
"The Latest Development Trends on Lithium-ion Batteries for xEV", 27 November 2020, CMC PUBLISHING, pages: 96 - 111
Attorney, Agent or Firm:
YOSHIMIYA Mikio et al. (JP)
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