Fuel cell electrode catalyst and method for producing the same
US-2017338495-A1 · Nov 23, 2017 · US
Fuel cell electrode catalyst, method for selecting the same, and fuel cell including the same
US11901565B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11901565-B2 |
| Application number | US-202217654175-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 9, 2022 |
| Priority date | Mar 11, 2021 |
| Publication date | Feb 13, 2024 |
| Grant date | Feb 13, 2024 |
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Abstract
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A fuel cell electrode catalyst includes: catalyst metal particles containing at least one of platinum or a platinum alloy; and support particles supporting the catalyst metal particles. The crystallite size 2r obtained from an X-ray diffraction image of the catalyst metal particles is 3.8 nm or less, where r represents a crystallite radius of the catalyst metal particles obtained from the X-ray diffraction image. The amount of CO adsorption Y (mL/g-Pt) on the fuel cell electrode catalyst satisfies Y≤40.386/r+1.7586.
First claim
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What is claimed is: 1. A polymer electrolyte fuel cell comprising a membrane electrode assembly, the membrane electrode assembly being composed of an anode catalyst layer, a cathode catalyst layer, and a polymer electrolyte membrane interposed between the anode catalyst layer and the cathode catalyst layer, wherein an electrode catalyst included in the cathode catalyst layer is the fuel cell electrode catalyst, wherein the electrolyte is an ionomer, and wherein the fuel cell electrode catalyst comprises: catalyst metal particles containing at least one of platinum or a platinum alloy; and support particles supporting the catalyst metal particles, wherein: a crystallite size 2r obtained from an X-ray diffraction image of the catalyst metal particles is 3.8 nm or less, where r represents a crystallite radius of the catalyst metal particles obtained from the X-ray diffraction image; and an amount of CO adsorption Y (mL/g-Pt) on the fuel cell electrode catalyst satisfies the following expression Y≤40.386/r+1.7586.
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- What does patent US11901565B2 cover?
- A fuel cell electrode catalyst includes: catalyst metal particles containing at least one of platinum or a platinum alloy; and support particles supporting the catalyst metal particles. The crystallite size 2r obtained from an X-ray diffraction image of the catalyst metal particles is 3.8 nm or less, where r represents a crystallite radius of the catalyst metal particles obtained from the X-ray…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd, Cataler Corp
- 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 Feb 13 2024 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).