公开(公告)号：US20240332636A1

公开(公告)日：2024-10-03

申请号：US18604474

申请日：2024-03-13

Applicant: FDK CORPORATION

Inventor： Satoshi Murase ,  Soma Suzuki ,  Tomomichi Yamaguchi ,  Taketoshi Banno ,  Takeshi Ito

IPC: H01M10/28 ,  H01M4/24 ,  H01M4/42 ,  H01M4/66 ,  H01M50/44 ,  H01M50/454 ,  H01M50/457 ,  H01M50/489 ,  H01M4/02

CPC classification number: H01M10/286 ,  H01M4/244 ,  H01M4/42 ,  H01M4/661 ,  H01M50/44 ,  H01M50/454 ,  H01M50/457 ,  H01M50/489 ,  H01M2004/027

Abstract: A battery includes an outer can and an electrode group housed in the outer can together with an alkaline electrolyte solution. The electrode group includes a positive electrode and a negative electrode stacked together with a separator therebetween. The negative electrode includes a negative electrode core and a negative electrode mixture retained on the negative electrode core. The negative electrode mixture contains at least one of zinc, a zinc alloy, or a zinc-containing compound. The negative electrode core is composed of a nonporous copper foil. The separator is a composite including a nonwoven fabric and a microporous film stacked together in the thickness direction. A value of A/B is 0.28 or more and 0.53 or less, where A is the total thickness of the microporous film, and B is the total thickness of the nonwoven fabric.

公开(公告)号：US20250167222A1

公开(公告)日：2025-05-22

申请号：US18934267

申请日：2024-11-01

Applicant: FDK CORPORATION

Inventor： Taketoshi Banno ,  Takeshi Kajiwara ,  Shohei Unoki ,  Satoshi Murase ,  Tomomichi Yamaguchi

IPC: H01M4/36 ,  H01M4/24 ,  H01M4/52 ,  H01M10/26 ,  H01M10/30

Abstract: A nickel-zinc secondary battery includes a positive electrode, a negative electrode, and an alkaline electrolyte. The positive electrode includes a particle that includes a nickel composite hydroxide as a positive electrode active material, and the particle including the nickel composite hydroxide has a half-value width of a peak in a (101) plane appearing at 2θ=35 to 45° in an X-ray diffraction measurement of less than 0.8°.