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Negative electrode for alkaline storage battery and alkaline storage battery including the negative electrode
US12482820B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12482820-B2 |
| Application number | US-202217663383-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 13, 2022 |
| Priority date | May 28, 2021 |
| Publication date | Nov 25, 2025 |
| Grant date | Nov 25, 2025 |
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- Title
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Abstract
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A negative electrode for an alkaline storage battery that achieves both an improvement in cycle life and an improvement in low temperature discharge characteristics, and an alkaline storage battery including the negative electrode are disclosed. The negative electrode for an alkaline storage battery includes a negative electrode core body formed of metal, and a negative electrode mixture layer which contains at least a hydrogen storage alloy and yttrium fluoride, and is carried on the negative electrode core body. Particles of the yttrium fluoride are formed so that the average particle size thereof is equal to 1 μm or more and 7 μm or less.
First claim
Opening claim text (preview).
What is claimed is: 1 . A negative electrode for an alkaline storage battery, the negative electrode comprising: a negative electrode core body formed of metal; and a negative electrode mixture layer that contains at least a hydrogen storage alloy and yttrium fluoride, and is carried on the negative electrode core body, wherein the particles of the yttrium fluoride are formed so that the average particle size thereof is equal to 1 μm or more and 3 μm or less. 2 . The negative electrode for an alkaline storage battery according to claim 1 , wherein particles of the hydrogen storage alloy are formed so that an average particle size thereof is equal to 15 μm or more and 90 μm or less. 3 . An alkaline storage battery comprising: an electrode group including the negative electrode according to claim 1 , a positive electrode, and a separator arranged between the positive electrode and the negative electrode; and an outer packaging can having electrical conductivity in which the electrode group is accommodated together with an alkaline electrolytic solution.
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Classifications
Negative electrodes · CPC title
Physical characteristics, e.g. porosity, surface area · CPC title
Metals · CPC title
as layered products · CPC title
as mixtures · CPC title
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- What does patent US12482820B2 cover?
- A negative electrode for an alkaline storage battery that achieves both an improvement in cycle life and an improvement in low temperature discharge characteristics, and an alkaline storage battery including the negative electrode are disclosed. The negative electrode for an alkaline storage battery includes a negative electrode core body formed of metal, and a negative electrode mixture layer …
- Who is the assignee on this patent?
- Fdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M4/582. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 25 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).