Negative electrode for alkaline secondary battery, outer case for alkaline secondary battery and alkaline secondary battery
US-9525166-B2 · Dec 20, 2016 · US
Storage battery
US2017033345A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017033345-A1 |
| Application number | US-201615214126-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jul 19, 2016 |
| Priority date | Jul 30, 2015 |
| Publication date | Feb 2, 2017 |
| Grant date | — |
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Abstract
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A storage battery includes a negative electrode including, as an active material, at least one of a metal capable of forming a dendrite and a metal compound thereof, a positive electrode, a separator, and an electrolyte containing an additive. In the storage battery, a concentration of the additive in the electrolyte in a region on a side of the negative electrode defined by the separator is higher than a concentration of the additive in a region on a side of the positive electrode.
First claim
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What is claimed is: 1 . A storage battery comprising: a negative electrode including, as an active material, at least one of a metal capable of forming a dendrite and a metal compound thereof, a positive electrode; a separator; and an electrolyte containing an additive, wherein the additive can move in the electrolyte through diffusion or migration, and a concentration of the additive in the electrolyte in a region on a side of the negative electrode defined by the separator is higher than a concentration of the additive in a region on a side of the positive electrode. 2 . The storage battery according to claim 1 , wherein the separator is a semipermeable membrane. 3 . The storage battery according to claim 1 , wherein the separator is an ion-exchange membrane. 4 . The storage battery according to claim 1 , wherein the additive is a substance capable of enhancing charge-discharge characteristics of the negative electrode. 5 . The storage battery according to claim 1 , wherein the additive is a substance capable of reducing the solubility of at least one of the metal capable of forming a dendrite and the metal compound thereof in the electrolyte. 6 . The storage battery according to claim 1 , wherein the additive is an organic substance. 7 . The storage battery according to claim 1 , wherein a viscosity of the electrolyte in the region on the negative electrode side is 70 Pa·s or less. 8 . The storage battery according to claim 1 , wherein the electrolyte is an alkaline electrolyte solution. 9 . The storage battery according to claim 8 , wherein the maximum operating potential of the positive electrode is 0.4 V or more relative to a potential of an electrode of Hg/HgO. 10 . The storage battery according to claim 8 , wherein the separator is an anion-exchange membrane. 11 . The storage battery according to claim 1 , wherein the separator is a grafted membrane. 12 . The storage battery according to claim 1 , wherein the separator is an ion-exchange membrane, and the ion-exchange membrane contains polyolefin as a substrate. 13 . A storage battery comprising: a negative electrode including, as an active material, at least one of a metal capable of forming a dendrite and a metal compound thereof, a positive electrode; a separator; and an electrolyte containing an additive, wherein the electrolyte is liquid, and a concentration of the additive in the electrolyte in a region on a side of the negative electrode defined by the separator is higher than a concentration of the additive in a region on a side of the positive electrode.
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- What does patent US2017033345A1 cover?
- A storage battery includes a negative electrode including, as an active material, at least one of a metal capable of forming a dendrite and a metal compound thereof, a positive electrode, a separator, and an electrolyte containing an additive. In the storage battery, a concentration of the additive in the electrolyte in a region on a side of the negative electrode defined by the separator is hi…
- Who is the assignee on this patent?
- Gs Yuasa Int Ltd, Univ Kyoto
- What technology area does this patent fall under?
- Primary CPC classification H01M4/24. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Feb 02 2017 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).