Title:
NEGATIVE ELECTRODE ACTIVE MATERIAL, LITHIUM ION BATTERY, AND METHOD FOR PRODUCING NEGATIVE ELECTRODE ACTIVE MATERIAL
Document Type and Number:
Japanese Patent JP2022108447
Kind Code:
A
Abstract:
To improve the utilization rate of an alloy-based negative electrode active material in a composite particle containing an alloy-based negative electrode active material and graphite.SOLUTION: A negative electrode active material includes first composite particles. The first composite particles include first active material particles, second active material particles, an electron conductor, and a solid electrolyte membrane. The first active material particles contain an alloy-based negative electrode active material. The second active material particles contain graphite. The electron conductor is arranged on the surface of the first active material particles. The solid electrolyte membrane covers the first active material particles. At least part of the electron conductor is embedded in the solid electrolyte membrane. The second active material particles support the first active material particles, the solid electrolyte membrane, and the electron conductor.SELECTED DRAWING: Figure 1
Inventors:
NITTA GEN
Application Number:
JP2021003442A
Publication Date:
July 26, 2022
Filing Date:
January 13, 2021
Export Citation:
Assignee:
PRIME PLANET ENERGY & SOLUTIONS INC
International Classes:
H01M4/38; H01M4/36; H01M4/48; H01M4/587
Domestic Patent References:
| JP2014187007A | 2014-10-02 | |||
| JP2016509739A | 2016-03-31 | |||
| JP2020021674A | 2020-02-06 |
Foreign References:
| WO2018110386A1 | 2018-06-21 | |||
| WO2006068066A1 | 2006-06-29 | |||
| WO2014046144A1 | 2014-03-27 |
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office