Title:
CARBON-COATED NON-GRAPHITIZABLE CARBON, LITHIUM ION SECONDARY BATTERY NEGATIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY
Document Type and Number:
WIPO Patent Application WO/2024/004945
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing: a carbon-coated non-graphitizable carbon which can achieve both high discharging capacity and initial efficiency when using the same in a lithium ion secondary battery negative electrode; a lithium ion secondary battery negative electrode using the carbon-coated non-graphitizable carbon; and a lithium ion secondary battery having the lithium ion secondary battery negative electrode. A carbon-coated non-graphitizable carbon according to the present invention is composed of a non-graphitizable carbon and a carbon-coating layer for coating the surface thereof. The average thickness of the carbon-coating layer is 4-30 nm. The minimum value of the thickness of the carbon-coating layer is 70% or more of the maximum value of that of the carbon-coating layer.
Inventors:
OKUMURA YUSUKE (JP)
SUTO MIKITO (JP)
KOBAYASHI HIKARU (JP)
FUSHIWAKI YUSUKE (JP)
TAHARA TOMOYUKI (JP)
HAGA RYUTA (JP)
SUTO MIKITO (JP)
KOBAYASHI HIKARU (JP)
FUSHIWAKI YUSUKE (JP)
TAHARA TOMOYUKI (JP)
HAGA RYUTA (JP)
Application Number:
PCT/JP2023/023595
Publication Date:
January 04, 2024
Filing Date:
June 26, 2023
Export Citation:
Assignee:
JFE CHEMICAL CORP (JP)
JFE STEEL CORP (JP)
JFE STEEL CORP (JP)
International Classes:
C01B32/00; H01M4/36; H01M4/587
Foreign References:
| JPH10233206A | 1998-09-02 | |||
| CN113184827A | 2021-07-30 | |||
| JP2009187939A | 2009-08-20 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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