Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERY, AND SECONDARY BATTERY USING SAME
Document Type and Number:
WIPO Patent Application WO/2022/181083
Kind Code:
A1
Abstract:
This negative electrode active material for a secondary battery contains composite particles. The composite particles include a lithium silicate phase and silicon phases dispersed within the lithium silicate phase. The silicon phases have linear portions within the lithium silicate phase, and the relationship between the largest diameter D1 and the smallest diameter D2 of the linear portions is 3 ≤ D1/D2. The composite particles contain metal Me dispersed within the lithium silicate phase. The metal Me is at least one selected from the group consisting of Fe, Pb, Zn, Sn, Cu, Ni, Cr, Zr and Ti.
Inventors:
OKAZAKI KEITA
UCHIYAMA YOHEI
UCHIYAMA YOHEI
Application Number:
PCT/JP2022/000625
Publication Date:
September 01, 2022
Filing Date:
January 12, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H01M4/36; H01M4/38; H01M4/48; H01M4/58
Domestic Patent References:
| WO2018179969A1 | 2018-10-04 | |||
| WO2019087771A1 | 2019-05-09 | |||
| WO2018179934A1 | 2018-10-04 | |||
| WO2020066576A1 | 2020-04-02 |
Foreign References:
| JP2014010890A | 2014-01-20 | |||
| JP2014191936A | 2014-10-06 |
Attorney, Agent or Firm:
KAWASAKI & PARTNERS (JP)
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