公开(公告)号：US20230343927A1

公开(公告)日：2023-10-26

申请号：US17759721

申请日：2021-02-04

Applicant: FDK CORPORATION

Inventor： Syouhei Unoki ,  Takahiro Endo ,  Shigekazu Yasuoka

IPC: H01M4/32 ,  H01M10/28 ,  H01M4/36 ,  H01M4/24

CPC classification number: H01M4/32 ,  H01M10/28 ,  H01M4/364 ,  H01M4/242 ,  H01M2004/028

Abstract: A battery 2 includes: a container 10; and an electrode group 6 housed in the container 10 together with an alkaline electrolyte liquid 4. The electrode group 6 includes a nickel electrode 14 as a positive electrode and a negative electrode 12 that are combined with a separator 8 interposed therebetween. The nickel electrode 14 includes a positive electrode core and a positive electrode mixture permeated in the positive electrode core. The positive electrode mixture contains nickel hydroxide that is a positive electrode active material. The nickel hydroxide contains a sulfate salt, and a weight rate of a S component contained in the sulfate salt to a Ni component in the nickel hydroxide is 0.28% or more and 1.50% or less.