Title:
NEGATIVE ELECTRODE MIXTURE CONTAINING GRAPHITE PARTICLES AND SULFIDE SOLID ELECTROLYTE, AND ALL-SOLID-STATE BATTERY HAVING THE SAME
Document Type and Number:
Japanese Patent JP2022071474
Kind Code:
A
Abstract:
To provide a negative electrode mixture for an all-solid-state battery capable of achieving a high discharge capacity.SOLUTION: A negative electrode mixture for an all-solid-state battery includes a sulfide solid electrolyte composed of an ion conductive compound composed of lithium, sulfur, and phosphorus, and graphite particles, and the void ratio in a negative electrode mixture layer obtained by powder molding the negative electrode mixture is 5% or less, the graphite particles preferably have an average flatness of 0 or more and less than 0.3, a particle size distribution D50 of 8 μm or more and 13 μm or less, and the BET value of 1 m2/g or more and 3 m2/g or less, and the average surface spacing d002 of (002) planes measured by X-ray diffraction method has a crystallinity of 0.336 nm or more and 0.337 nm or less.SELECTED DRAWING: None
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Inventors:
TAKANASHI SHOJI
Application Number:
JP2020180459A
Publication Date:
May 16, 2022
Filing Date:
October 28, 2020
Export Citation:
Assignee:
SUMITOMO METAL MINING CO
International Classes:
H01M4/133; H01B1/06; H01B1/10; H01M4/131; H01M4/525; H01M4/587; H01M4/62; H01M10/052; H01M10/0562
Attorney, Agent or Firm:
Norihisa Tsujikawa
Previous Patent: JPWO2022071473
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