Separator for secondary battery, manufacturing method thereof, method for manufacturing secondary battery comprising the separator and secondary battery manufactured by the method
US-12183949-B2 · Dec 31, 2024 · US
Separator for metal secondary batteries
US2017279101A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2017279101-A1 |
| Application number | US-201515510768-A |
| Country | US |
| Kind code | A1 |
| Filing date | Aug 27, 2015 |
| Priority date | Sep 22, 2014 |
| Publication date | Sep 28, 2017 |
| Grant date | — |
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- Title
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Abstract
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Provided is a separator which can make the electric field on the surface of a negative electrode for a metal secondary battery homogeneous to thereby prevent the formation of dendrites. A porous separator for metal secondary batteries, which has a polymer electrolyte layer formed on the surface layer of at least one main surface of a porous polyimide film. It is preferred that the polymer electrolyte layer is composed of both a polymer electrolyte material which is supported on at least one main surface of the porous polyimide film and a polymer electrolyte material which is supported in voids in a layered region that extends from the main surface.
First claim
Opening claim text (preview).
1 . A porous separator, comprising a porous polyimide film, and a polymer electrolyte layer formed on a surface layer of a main surface of the porous polyimide film. 2 . The porous separator according to claim 1 , wherein the polymer electrolyte layer is formed of a polymer electrolyte material supported on a main surface of the porous polyimide film and a polymer electrolyte material supported in voids in a layered region that extends from the main surface. 3 . The porous separator according to claim 1 , wherein the polymer electrolyte layer comprises at least one of a metal salt and a filler. 4 . A metal secondary battery comprising an electrolytic solution and a porous separator according to claim 1 disposed between a metal negative electrode and a positive electrode, wherein a main surface, having a polymer electrolyte layer, of the porous separator is disposed in a metal negative electrode side. 5 . The porous separator according to claim 2 , wherein the polymer electrolyte layer comprises at least one of a metal salt and a filler. 6 . A method for producing a metal secondary battery, comprising disposing an electrolytic solution and a porous separator according to claim 1 between a metal negative electrode and a positive electrode, wherein a main surface, having a polymer electrolyte layer, of the porous separator is disposed in a metal negative electrode side.
Assignees
Inventors
Classifications
of elements or alloys · CPC title
Polymeric materials, e.g. gel-type or solid-type · CPC title
Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title
- H01M10/058Primary
Construction or manufacture · CPC title
comprising three or more layers · CPC title
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Frequently asked questions
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- What does patent US2017279101A1 cover?
- Provided is a separator which can make the electric field on the surface of a negative electrode for a metal secondary battery homogeneous to thereby prevent the formation of dendrites. A porous separator for metal secondary batteries, which has a polymer electrolyte layer formed on the surface layer of at least one main surface of a porous polyimide film. It is preferred that the polymer elect…
- Who is the assignee on this patent?
- Tokyo Ohko Kogyo Co Ltd, Univ Tokyo Metropolitan, 3Dom Inc
- What technology area does this patent fall under?
- Primary CPC classification H01M10/058. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Sep 28 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).