US 12,394,820 B2
Positive-electrode material and battery
Hiroki Kamitake, Osaka (JP); Seiji Nishiyama, Osaka (JP); and Izuru Sasaki, Aichi (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Sep. 8, 2022, as Appl. No. 17/930,427.
Application 17/930,427 is a continuation of application No. PCT/JP2021/010466, filed on Mar. 15, 2021.
Claims priority of application No. 2020-066873 (JP), filed on Apr. 2, 2020.
Prior Publication US 2023/0006208 A1, Jan. 5, 2023
Int. Cl. H01M 10/0562 (2010.01); C01F 17/36 (2020.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 4/02 (2006.01)
CPC H01M 10/0562 (2013.01) [C01F 17/36 (2020.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/62 (2013.01); H01M 2004/028 (2013.01); H01M 2300/008 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A positive-electrode material comprising:
a positive-electrode active material;
a coating layer covering the positive-electrode active material; and
a solid electrolyte,
wherein the coating layer contains oxygen and lithium,
the positive-electrode active material and the coating layer constitute a coated active material,
a ratio Li/O of a lithium content to an oxygen content in a surface layer portion of the coated active material is 0.26 or less based on an atomic ratio,
the solid electrolyte is represented by the following composition formula (1),
LiαMβXγ  formula (1)
where α, β, and γ are independently more than 0,
M includes at least one element selected from the group consisting of metal elements other than Li and metalloid elements, and
X includes at least two selected from the group consisting of F, Cl, Br, and I.