公开(公告)号：US20220384786A1

公开(公告)日：2022-12-01

申请号：US17660387

申请日：2022-04-22

Applicant: FDK CORPORATION

Inventor： Akira Saguchi ,  Shota Ohata ,  Jun Ishida ,  Yuki Ehara ,  Masaru Kihara

IPC: H01M4/36 ,  H01M4/62 ,  H01M10/30

Abstract: A nickel metal hydride secondary battery comprises an outer can and an electrode assembly housed in the outer can together with an alkaline electrolytic solution, wherein the electrode assembly is such that a positive electrode including a positive electrode mixture and a negative electrode including a negative electrode mixture are superimposed with a separator interposed therebetween, the positive electrode mixture includes nickel hydroxide forming a solid solution with zinc as a positive electrode active material and zinc oxide as a positive electrode additive, the negative electrode mixture includes hydrogen absorbing alloy particles and a negative electrode additive, the negative electrode additive is a composite in which yttrium fluoride is supported on carbon black, and a surface of the hydrogen absorbing alloy particles is partially coated with the composite.

公开(公告)号：US20190319260A1

公开(公告)日：2019-10-17

申请号：US16383048

申请日：2019-04-12

Applicant: FDK CORPORATION

Inventor： Toshiki Sato ,  Jun Ishida ,  Akira Saguchi ,  Shota Ohata

IPC: H01M4/24 ,  H01M10/28 ,  H01M4/36 ,  H01M4/62 ,  H01M4/38

Abstract: A battery comprises an electrode group including a separator, a positive electrode and a negative electrode. The negative electrode comprises a negative electrode core, negative electrode mixture layers retained to the negative electrode core, and a fluorine resin layer disposed on the surface of the negative electrode mixture layers. The negative electrode mixture layers include a first outermost peripheral region located at the outermost periphery of the electrode group and a second outermost peripheral region located opposite to the first outermost peripheral region. When the amount of the fluorine resin constituting a first fluorine resin layer in a portion of the first outermost peripheral region is represented by A, and the amount of the fluorine resin constituting a second fluorine resin layer in a portion of the second outermost peripheral region is represented by B, a relation A>B is satisfied.

公开(公告)号：US20190148723A1

公开(公告)日：2019-05-16

申请号：US16180646

申请日：2018-11-05

Applicant: FDK CORPORATION

Inventor： Akira Saguchi ,  Jun Ishida ,  Shota Ohata

IPC: H01M4/38 ,  H01M4/24 ,  H01M4/62 ,  H01M10/30

Abstract: A nickel hydrogen secondary battery 2 has an electrode group 22 including a separator 28, a positive electrode 24, and a negative electrode 26. The negative electrode 26 has a negative electrode core, and a negative electrode mixture held on the negative electrode core. The negative electrode mixture contains a hydrogen absorbing alloy and a water repellent. The hydrogen absorbing alloy has a composition represented by the general formula: Ln1-xMgxNiy-a-bAlaMb, where Ln represents at least one element selected from rare earth elements, Ti and Zr; M represents at least one element selected from V, Nb, Ta, and the like, and the subscripts a, b, x and y satisfy relations represented by 0.05≤a≤0.30, 0≤b≤0.50, 0≤x