US 12,283,693 B2
Positive electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery, battery module and battery system using the same
Hikaru Yoshikawa, Tsukuba (JP); and Yuichi Sabi, Tsukuba (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Appl. No. 17/768,968
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
PCT Filed Mar. 18, 2022, PCT No. PCT/JP2022/012903
§ 371(c)(1), (2) Date Apr. 14, 2022,
PCT Pub. No. WO2022/196829, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. 2021-045977 (JP), filed on Mar. 19, 2021; application No. 2021-133388 (JP), filed on Aug. 18, 2021; and application No. 2021-133447 (JP), filed on Aug. 18, 2021.
Prior Publication US 2022/0352514 A1, Nov. 3, 2022
Int. Cl. H01M 4/525 (2010.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/525 (2013.01) [H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A positive electrode for a non-aqueous electrolyte secondary battery, comprising a current collector and a positive electrode active material layer which includes positive electrode active material particles and is provided on the current collector, wherein:
the positive electrode active material layer has a thickness of 30 to 500 μm, and
a spreading resistance distribution of the positive electrode active material layer shows a profile with a sum of frequencies of resistance values in a range of 4.0 to 6.0 (log Ω) accounting for 0.0 to 5.0%, relative to a total, 100%, of frequencies of resistance values in a range of 4.0 to 12.5 (log Ω).