Solid electrolyte and battery
US-2024186565-A1 · Jun 6, 2024 · US
Proton-conductive polymer electrolyte membrane, and membrane-electrode assembly and polymer electrolyte fuel cell using the same
US8980499B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8980499-B2 |
| Application number | US-201013322073-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 21, 2010 |
| Priority date | May 27, 2009 |
| Publication date | Mar 17, 2015 |
| Grant date | Mar 17, 2015 |
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Abstract
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Provided is a polyimide-based proton-conductive polymer electrolyte membrane having high methanol permeation resistance property (methanol blocking property). The proton-conductive polymer electrolyte membrane includes, as a main component, a polyimide resin formed by polycondensation of a tetracarboxylic dianhydride, a first aromatic diamine having a proton-conductive group, and a second aromatic diamine having no proton-conductive group. The second aromatic diamine has a fused ring skeleton composed of three or more rings. This electrolyte membrane is suitable for use in a polymer electrolyte fuel cell (PEFC), in particular in a direct methanol fuel cell (DMFC).
First claim
Opening claim text (preview).
The invention claimed is: 1. A proton-conductive polymer electrolyte membrane comprising, as a main component, a polyimide resin formed by polycondensation of a tetracarboxylic dianhydride, a first aromatic diamine having a proton-conductive group, and a second aromatic diamine having no proton-conductive group, wherein the polyimide resin includes a structural unit represented by the following formula (1) formed by the polycondensation of the tetracarboxylic dianhydride and the f…
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Cross-Sectional Technologies · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Cross-Sectional Technologies · mapped topic
Electricity · mapped topic
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- What does patent US8980499B2 cover?
- Provided is a polyimide-based proton-conductive polymer electrolyte membrane having high methanol permeation resistance property (methanol blocking property). The proton-conductive polymer electrolyte membrane includes, as a main component, a polyimide resin formed by polycondensation of a tetracarboxylic dianhydride, a first aromatic diamine having a proton-conductive group, and a second aroma…
- Who is the assignee on this patent?
- Sugitani Tooru, Nishii Hiroyuki, Shimazu Akira, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H01B1/122. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 17 2015 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).