Method for producing carbon material using catalyst, and carbon material
US-2015167200-A1 · Jun 18, 2015 · US
Gas diffusion electrode base material product and polymer electrolyte fuel cell
US2024030461A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024030461-A1 |
| Application number | US-202118037616-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 25, 2021 |
| Priority date | Nov 26, 2020 |
| Publication date | Jan 25, 2024 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An object of the present invention is to shorten the aging time for a fuel cell. To achieve the object, a gas diffusion electrode medium product according to the present invention includes sulfuric acid in an amount of 1.1 μg/cm 2 or less. In addition, a polymer electrolyte fuel cell according to the present invention has the gas diffusion electrode medium product according to the present invention incorporated therein.
First claim
Opening claim text (preview).
1 . A gas diffusion electrode medium product comprising sulfuric acid in an amount of 1.111 g/cm 2 or less. 2 . The gas diffusion electrode medium product according to claim 1 , comprising sulfuric acid in an amount of 0.511 g/cm 2 or less. 3 . The gas diffusion electrode medium product according to claim 2 , comprising sulfuric acid in an amount of 0.211 g/cm 2 or less. 4 . The gas diffusion electrode medium product according to claim 1 , comprising an electroconductive porous material composed of a carbon fiber, wherein a fluoropolymer containing sulfur in an amount of 50 ppm or less is attached to said carbon fiber. 5 . The gas diffusion electrode medium product according to claim 1 , comprising: an electroconductive porous material composed of a carbon fiber; and a microporous layer containing carbon powder and provided on at least one face of said electroconductive porous material. 6 . The gas diffusion electrode medium product according to claim 5 , wherein said carbon powder comprises sulfur in an amount of 3000 ppm or less. 7 . The gas diffusion electrode medium product according to claim 5 , wherein said microporous layer comprises a fluoropolymer containing sulfur in an amount of 50 ppm or less. 8 . The gas diffusion electrode medium product according to claim 5 , comprising carbon black heat-treated at 2000° C. or more under an inert atmosphere for 10 minutes or more. 9 . A polymer electrolyte fuel cell, comprising said gas diffusion electrode medium product according to claim 1 incorporated therein.
Assignees
Inventors
Classifications
- H01M4/8807Primary
Gas diffusion layers · CPC title
characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title
Porous electrodes · CPC title
Carbon-based electrodes · CPC title
Electrically conductive fillers · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2024030461A1 cover?
- An object of the present invention is to shorten the aging time for a fuel cell. To achieve the object, a gas diffusion electrode medium product according to the present invention includes sulfuric acid in an amount of 1.1 μg/cm 2 or less. In addition, a polymer electrolyte fuel cell according to the present invention has the gas diffusion electrode medium product according to the present inve…
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification H01M4/8807. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jan 25 2024 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).