Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL AND NEGATIVE ELECTRODE
Document Type and Number:
WIPO Patent Application WO/2023/135970
Kind Code:
A1
Abstract:
The present invention is a negative electrode active material containing negative electrode active material particles, the negative electrode active material being characterized in that: the negative electrode active material particles contain silicon oxide particles coated by a carbon layer; at least some of the silicon oxide particles contain at least one selected from the group consisting of Li2SiO3, Li4SiO4, and Li6Si2O7; and at least a portion of the outermost layers of the negative electrode active material particles is covered by a plasticizer layer. As a result thereof, the present invention can provide: a negative electrode active material that can increase stability during slurry formation while maintaining sufficient battery cycle characteristics; and a negative electrode containing this negative electrode active material.
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Inventors:
HIROSE TAKAKAZU (JP)
TAKAHASHI KOHTA (JP)
OSAWA YUSUKE (JP)
KANESATO SHUHEI (JP)
MURAYAMA MASAKI (JP)
SAKAI REIKO (JP)
TAKAHASHI KOHTA (JP)
OSAWA YUSUKE (JP)
KANESATO SHUHEI (JP)
MURAYAMA MASAKI (JP)
SAKAI REIKO (JP)
Application Number:
PCT/JP2022/044441
Publication Date:
July 20, 2023
Filing Date:
December 01, 2022
Export Citation:
Assignee:
SHINETSU CHEMICAL CO (JP)
International Classes:
H01M4/48; C01B33/32; H01M4/36; H01M4/485
Domestic Patent References:
| WO2018061536A1 | 2018-04-05 | |||
| WO2020149079A1 | 2020-07-23 | |||
| WO2017145654A1 | 2017-08-31 | |||
| WO2020262647A1 | 2020-12-30 | |||
| WO2022039201A1 | 2022-02-24 |
Foreign References:
| JP2017188451A | 2017-10-12 | |||
| US20170271723A1 | 2017-09-21 |
Attorney, Agent or Firm:
YOSHIMIYA Mikio et al. (JP)
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