US12482808B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12482808-B2 |
| Application number | US-202117759721-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 4, 2021 |
| Priority date | Feb 21, 2020 |
| Publication date | Nov 25, 2025 |
| Grant date | Nov 25, 2025 |
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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.
Opening claim text (preview).
The invention claimed is: 1 . A nickel positive electrode for an alkaline secondary battery, the nickel positive electrode comprising: a positive electrode core having a conductive porous structure; and a positive electrode mixture, comprising positive electrode active material particles, conductive material, a positive electrode additive, water, and a binder, permeated in the conductive porous structure of the positive electrode core, wherein the positive electrode active material particles comprise nickel hydroxide and an Al solid solution in a crystalline structure, with sulfate salt contained in the crystalline structure of the particles, and wherein a weight ratio of a S component contained in the sulfate salt contained in the particles to a Ni component in the particles is 0.28% or more and 1.50% or less. 2 . An alkaline secondary battery, comprising: a container; and an electrode group housed in the container together with an alkaline electrolyte liquid, wherein the electrode group includes a positive electrode and a negative electrode that are combined with a separator interposed therebetween, and the positive electrode is the nickel electrode for an alkaline secondary battery according to claim 1 . 3 . The alkaline secondary battery according to claim 2 , wherein the negative electrode includes a hydrogen storage alloy.
Nickel accumulators (H01M10/34 takes precedence) · CPC title
Positive electrodes · CPC title
Hydrogen storage electrodes · CPC title
Synthetic resins, e.g. thermoplastics or thermosetting resins · CPC title
Fibrous material · CPC title
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