Nickel-hydrogen storage battery and battery pack
US-2015280216-A1 · Oct 1, 2015 · US
Negative electrode for nickel hydrogen secondary battery, and nickel hydrogen secondary battery including the negative electrode
US2019148723A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019148723-A1 |
| Application number | US-201816180646-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 5, 2018 |
| Priority date | Nov 10, 2017 |
| Publication date | May 16, 2019 |
| Grant date | — |
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Abstract
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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: Ln 1-x Mg x Ni y-a-b Al a M b , 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<0.05 and 2.8≤y≤3.9, respectively. The hydrogen absorbing alloy has a structure of an A 2 B 7 type. The water repellent comprises a perfluoroalkoxyalkane.
First claim
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1 . A negative electrode for a nickel hydrogen secondary battery, the negative electrode comprising: a negative electrode core; and a negative electrode mixture held on the negative electrode core, wherein the negative electrode mixture comprises a hydrogen absorbing alloy and a water repellent, wherein the hydrogen absorbing alloy has a composition represented by the general formula Ln 1-x Mg x Ni y-a-b Al a M b , where Ln represents at least one element selected from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sc, Y, Ti and Zr, M represents at least one element selected from V, Nb, Ta, Cr, Mo, Mn, Fe, Co, Ga, Zn, Sn, In, Cu, Si, P and B, and the subscripts a, b, x and y satisfy relations represented by 0.05≤a≤0.30, 0≤b≤0.50, 0≤x<0.05 and 2.8≤y≤3.9, respectively, wherein the hydrogen absorbing alloy has a structure of an A 2 B 7 type, and wherein the water repellent comprises a perfluoroalkoxyalkane. 2 . A nickel hydrogen secondary battery comprising: a container; and an electrode group accommodated in the container together with an alkali electrolyte solution, wherein the electrode group comprises a positive electrode and a negative electrode stacked through a separator; and wherein the negative electrode is a negative electrode for a nickel hydrogen secondary battery according to claim 1 .
Assignees
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Classifications
Inhibitors, e.g. gassing inhibitors, corrosion inhibitors · CPC title
Nickel accumulators (H01M10/34 takes precedence) · CPC title
- H01M4/383Primary
Hydrogen absorbing alloys · CPC title
Electrodes for alkaline accumulators · CPC title
Negative electrodes · CPC title
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- What does patent US2019148723A1 cover?
- 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 a…
- Who is the assignee on this patent?
- Fdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M4/383. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu May 16 2019 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).