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Title:
NEGATIVE ELECTRODE AND BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/048609
Kind Code:
A1
Abstract:
The present invention pertains to: a negative electrode including a current collector layer, a first active material layer joined to the current collector layer, and a second active material layer joined to the first active material layer; and a battery provided with said negative electrode. In the negative electrode, the first active material layer contains: a first graphite; and 1-90 wt.% of a first elemental silicon or silicon compound with respect to the total weight of the first active material layer. Further, in the negative electrode, the second active material layer contains: a second graphite having an average particle diameter smaller than that of the first graphite; and not less than 0 wt.% but less than 1 wt.% of a second elemental silicon or silicon compound with respect to the total weight of the second active material layer. Accordingly, the durability of the battery can be improved.

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Inventors:
INABA AKIRA (JP)
MIKI TAKESHI (JP)
Application Number:
PCT/JP2023/031325
Publication Date:
March 07, 2024
Filing Date:
August 29, 2023
Export Citation:
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Assignee:
VEHICLE ENERGY JAPAN INC (JP)
International Classes:
H01M4/133; H01M4/134; H01M4/36; H01M4/38; H01M4/48; H01M4/587; H01M4/62; H01M4/66
Domestic Patent References:
WO2019131195A12019-07-04
Foreign References:
JP2016181348A2016-10-13
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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