US 12,113,198 B2
Positive electrode for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery
Youichirou Uka, Hyogo (JP); and Rie Matsuoka, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/426,045
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Dec. 18, 2019, PCT No. PCT/JP2019/049644
§ 371(c)(1), (2) Date Jul. 27, 2021,
PCT Pub. No. WO2020/158224, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-016035 (JP), filed on Jan. 31, 2019.
Prior Publication US 2022/0115635 A1, Apr. 14, 2022
Int. Cl. H01M 4/131 (2010.01); H01M 4/04 (2006.01); H01M 4/133 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/62 (2006.01); H01M 50/107 (2021.01); H01M 4/02 (2006.01)
CPC H01M 4/131 (2013.01) [H01M 4/0404 (2013.01); H01M 4/133 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/621 (2013.01); H01M 50/107 (2021.01); H01M 2004/027 (2013.01); H01M 2004/028 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A positive electrode for a nonaqueous electrolyte secondary battery, comprising:
a collector; and
a mixture layer formed on the collector, wherein
the mixture layer comprises:
a lithium transition metal oxide that contains more than 50% by mole of Ni relative to the total number of moles of metal elements other than Li;
a carbon material;
a polymer compound that is soluble in N-methyl-2-pyrrolidone and has a ring structure in a repeating unit; and
a polyoxyethylene amine compound,
wherein the mixture layer contains the polyoxyethylene amine compound in a range of 1 to 50% by mass relative to a mass of the carbon material.