US 12,142,763 B2
Positive electrode active material for non-aqueous electrolyte secondary cell, and non-aqueous electrolyte secondary cell
Yoshinori Aoki, Osaka (JP); and Takeshi Ogasawara, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Kadoma (JP)
Filed on Oct. 17, 2023, as Appl. No. 18/380,679.
Application 18/380,679 is a continuation of application No. 16/957,143, granted, now 11,831,013, previously published as PCT/JP2018/046218, filed on Dec. 17, 2018.
Claims priority of application No. 2017-249717 (JP), filed on Dec. 26, 2017.
Prior Publication US 2024/0058675 A1, Feb. 22, 2024
Int. Cl. H01M 4/525 (2010.01); A63B 69/00 (2006.01); A63B 102/26 (2015.01); H01M 4/02 (2006.01)
CPC H01M 4/525 (2013.01) [A63B 69/0026 (2013.01); A63B 2102/26 (2015.10); A63B 2220/17 (2013.01); A63B 2220/833 (2013.01); A63B 2225/74 (2020.08); H01M 2004/027 (2013.01)] 5 Claims
 
1. A positive electrode active material for a non-aqueous electrolyte secondary battery, comprising:
a Ni-containing lithium transition metal oxide having a layered structure, wherein the lithium transition metal oxide has a crystallite size s in the range of 400 Å≤s≤500 Å, as calculated from a half width of a diffraction peak of the (104) plane, in an X-ray diffraction pattern with X-ray diffraction, according to the Scherrer's equation, and
a half width n of a diffraction peak of the (208) plane of the lithium transition metal oxide, in an X-ray diffraction pattern with X-ray diffraction, is 0.30°≤n≤0.50°.