Title:
SECONDARY CELL AND SECONDARY CELL MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2023096951
Kind Code:
A
Abstract:
To easily and reliably transport electrode plates in a manufacturing process of a nickel-hydrogen storage cell.SOLUTION: A nickel-hydrogen storage cell 1 comprises a cathode plate 2. The cathode plate comprises a cathode current collector 21, which is made of a rectangular plate-shaped porous metal, and a cathode mixture layer 22, which contains a cathode active material and is filled into the cathode current collector. There is a filling density difference such that the density of the cathode mixture layer 22 filled into the cathode current collector 21 gradually decreases from a dense surface 22c to a sparse surface 22a. When the cathode plate 2 is divided into three equal parts of a first layer L1, a second layer L2 and a third layer L3 in the direction of thickness from the sparse surface 22a, the first layer and the third layer each have a filling density difference of the active material from 2% to 10% inclusive relative to the second layer L2.SELECTED DRAWING: Figure 9
Inventors:
OKADA HIDEKI
WATABE YOSUKE
WATABE YOSUKE
Application Number:
JP2021213037A
Publication Date:
July 07, 2023
Filing Date:
December 27, 2021
Export Citation:
Assignee:
PRIMEARTH EV ENERGY CO LTD
International Classes:
H01M4/32; H01M4/26; H01M4/66; H01M4/80
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Hironobu Onda