Title:
COMPOSITE PARTICLES, POSITIVE ELECTRODE, ALL-SOLID-STATE BATTERY, AND METHOD FOR MANUFACTURING COMPOSITE PARTICLES
Document Type and Number:
Japanese Patent JP2023153516
Kind Code:
A
Abstract:
To improve the electronic conductivity of a coating film in composite particles (coated cathode active material) provided with a phosphorus-based coating film.SOLUTION: Composite particles include positive electrode active material particles and a coating film that covers at least a portion of the surface of the positive electrode active material particles. The coating film includes a phosphorus compound and a carbon material. The phosphorus compound includes at least one of a first element (glass network forming element) and a second element (transition element), and phosphorus. In the coating film, the relationship of the formula (1): CLi/(CP+CE1+CE2)≤2.5 is satisfied. CLi, CP, CE1, CE2 indicate the elemental concentration of each element measured by XPS.SELECTED DRAWING: Figure 1
Inventors:
HEIDI HODES MENDOZA BISBAL
KUBOTA MASARU
GOTO IPPEI
KUBOTA MASARU
GOTO IPPEI
Application Number:
JP2022062836A
Publication Date:
October 18, 2023
Filing Date:
April 05, 2022
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01M4/36; H01M4/13; H01M4/62; H01M10/052; H01M10/0562
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office