US 12,308,470 B2
Zinc secondary battery and separator for zinc secondary battery
Hiroshi Suyama, Mishima (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Oct. 6, 2023, as Appl. No. 18/377,385.
Application 18/377,385 is a continuation of application No. 17/391,426, filed on Aug. 2, 2021, granted, now 12,087,968.
Claims priority of application No. 2020-165355 (JP), filed on Sep. 30, 2020.
Prior Publication US 2024/0047824 A1, Feb. 8, 2024
Int. Cl. H01M 50/446 (2021.01); H01M 50/417 (2021.01); H01M 50/423 (2021.01); H01M 50/46 (2021.01)
CPC H01M 50/446 (2021.01) [H01M 50/417 (2021.01); H01M 50/423 (2021.01); H01M 50/46 (2021.01)] 7 Claims
OG exemplary drawing
 
1. A zinc secondary battery, comprising
a negative electrode body, a separator for the zinc secondary battery, and a positive electrode body provided in this order,
wherein the negative electrode body, the separator for the zinc secondary battery, and the positive electrode body are impregnated with an electrolyte,
wherein the negative electrode body comprises a negative electrode active material layer including zinc and zinc oxide,
wherein the positive electrode body comprises a positive electrode active material layer including at least one nickel hydroxide or nickel oxyhydroxide,
wherein the separator for the zinc secondary battery comprises a zirconium sulfate-containing porous layer and at least one porous base material layer that are stacked on each other,
wherein the zirconium sulfate-containing porous layer comprises a porous layer with zirconium sulfate particles adhered to the porous layer, and
wherein the at least one porous base material layer comprises a first porous base material layer and a second porous base material layer, and wherein the first porous base material layer, the zirconium sulfate-containing porous layer, and the second porous base material layer are stacked in this order.