US 11,811,062 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. 17/768,941
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
PCT Filed Mar. 18, 2022, PCT No. PCT/JP2022/012904
§ 371(c)(1), (2) Date Apr. 14, 2022,
PCT Pub. No. WO2022/196830, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. 2021-045810 (JP), filed on Mar. 19, 2021; and application No. 2021-045971 (JP), filed on Mar. 19, 2021.
Prior Publication US 2023/0163291 A1, May 25, 2023
Int. Cl. H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 10/0585 (2010.01); H01M 10/0525 (2010.01); H01M 4/525 (2010.01); H01M 4/02 (2006.01)
CPC H01M 4/5825 (2013.01) [H01M 4/525 (2013.01); H01M 4/621 (2013.01); H01M 4/625 (2013.01); H01M 10/0525 (2013.01); H01M 10/0585 (2013.01); H01M 2004/021 (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 positive electrode current collector and a positive electrode active material layer provided on the positive electrode current collector, wherein:
the positive electrode active material layer comprises a positive electrode active material; and
an integrated value (a) is 3 to 15%, which is an integrated value of frequency of particle diameters of 1 μm or less, and a frequency (b) is 8 to 20%, which is a frequency of a diameter with a maximum frequency, each determined from a volume-based particle size distribution curve of particles present in the positive electrode active material layer.