US 12,347,855 B2
Negative electrode active material for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery
Yukihiro Oki, Osaka (JP); and Masahisa Fujimoto, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/763,969
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Sep. 29, 2020, PCT No. PCT/JP2020/036802
§ 371(c)(1), (2) Date Mar. 25, 2022,
PCT Pub. No. WO2021/065862, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 2019-178617 (JP), filed on Sep. 30, 2019.
Prior Publication US 2022/0344650 A1, Oct. 27, 2022
Int. Cl. H01M 4/40 (2006.01); H01M 4/42 (2006.01); H01M 4/02 (2006.01)
CPC H01M 4/42 (2013.01) [H01M 2004/027 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A negative electrode active material for a non-aqueous electrolyte secondary battery, including a zinc-manganese alloy containing Zn, Mn, and Fe, wherein
in the zinc-manganese alloy:
a molar ratio of a Zn content to a Mn content is 3 to 13; and
a mass ratio of an Fe content to a total mass of Zn and Mn is 1000 ppm or less.