Gas Diffusion Electrodes and Methods for Fabricating and Testing Same
US-2015376803-A1 · Dec 31, 2015 · US
Fuel cell electrode catalyst and method for producing the same
US10950869B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10950869-B2 |
| Application number | US-201515521037-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 23, 2015 |
| Priority date | Oct 24, 2014 |
| Publication date | Mar 16, 2021 |
| Grant date | Mar 16, 2021 |
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- Title
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Abstract
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An object of the present invention is to achieve both high initial performance and durability performance of a fuel cell. Such object can be achieved by using a fuel cell electrode catalyst that includes a solid carbon carrier and an alloy of platinum and cobalt supported on the carrier.
First claim
Opening claim text (preview).
The invention claimed is: 1. A fuel cell electrode catalyst comprising: a solid carbon carrier, wherein the solid carbon is a carbon in which the rate of the outer surface area based on t-Plot relative to the BET surface area is greater than or equal to 40%; and an alloy of platinum and cobalt supported on the carrier, wherein the alloy is subjected to acid treatment to elute cobalt, wherein a molar ratio of platinum to cobalt in the alloy is 7 to 11:1, wherein an average particle diameter of the alloy is 3.5 to 4.1 nm, and wherein an amount of cobalt to be eluted is less than or equal to 115 ppm. 2. The fuel cell electrode catalyst according to claim 1 , wherein a degree of dispersion of the alloy measured through small-angle X-ray scattering is less than or equal to 44%. 3. A fuel cell comprising the fuel cell electrode catalyst according to claim 1 . 4. The fuel cell according to claim 3 , wherein a degree of dispersion of the alloy measured through small-angle X-ray scattering is less than or equal to 44%. 5. The fuel cell electrode catalyst according to claim 1 , wherein the acid treatment is performed at 70 to 90° C. 6. The fuel cell electrode catalyst according to claim 1 , wherein the average particle diameter of the solid carbon carrier is less than or equal to 30 μm and greater than or equal to 0.01 μm. 7. The fuel cell electrode catalyst according to claim 1 , wherein the average particle diameter of the solid carbon carrier is less than or equal to 30 μm and greater than or equal to 0.1 μm. 8. The fuel cell electrode catalyst according to claim 1 , wherein the average particle diameter of the solid carbon carrier is less than or equal to 13 μm and greater than or equal to 0.01 μm. 9. The fuel cell electrode catalyst according to claim 1 , wherein the average particle diameter of the solid carbon carrier is less than or equal to 13 μm and greater than or equal to 0.1 μm. 10. The fuel cell electrode catalyst according to claim 1 , wherein the average particle diameter of the solid carbon carrier is less than or equal to 10 μm and greater than or equal to 0.1 μm.
Assignees
Inventors
Classifications
Manufacturing or production processes characterised by the final manufactured product · CPC title
Fuel cells · CPC title
supported on carriers, e.g. powder carriers · CPC title
- H01M4/921Primary
Alloys or mixtures with metallic elements · CPC title
Processes of manufacture · CPC title
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Frequently asked questions
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- What does patent US10950869B2 cover?
- An object of the present invention is to achieve both high initial performance and durability performance of a fuel cell. Such object can be achieved by using a fuel cell electrode catalyst that includes a solid carbon carrier and an alloy of platinum and cobalt supported on the carrier.
- Who is the assignee on this patent?
- Cataler Corp, Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/921. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 16 2021 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).