Supporting carbon material for solid polymer fuel cell and catalyst metal particle-supporting carbon material
US-2017194652-A1 · Jul 6, 2017 · US
Fuel cell electrode catalyst
US11258075B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11258075-B2 |
| Application number | US-201715835789-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 8, 2017 |
| Priority date | Dec 9, 2016 |
| Publication date | Feb 22, 2022 |
| Grant date | Feb 22, 2022 |
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Abstract
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A fuel cell electrode catalyst includes: a noble-metal-supported catalyst including a carbon support and a noble metal supported on the carbon support; and a water-repellent material with which the noble-metal-supported catalyst is modified. The carbon support is mesoporous carbon in which a pore volume of pores having a pore size of 2 nm to 5 nm is 2.1 ml/g to 2.4 ml/g. An amount of the water-repellent material is 3% by weight to 7% by weight with respect to a total weight of the mesoporous carbon and the water-repellent material.
First claim
Opening claim text (preview).
What is claimed is: 1. A fuel cell electrode catalyst comprising: a noble-metal-supported catalyst including a carbon support and a noble metal supported on the carbon support; and a water-repellent material with which the noble-metal-supported catalyst is modified, wherein the carbon support is mesoporous carbon in which a pore volume of pores having a pore size of 2 nm to 5 nm is 2.1 ml/g to 2.4 ml/g, said pore volume is a cumulative value of the logarithmic derivative pore volumes, dV/d(logD), within a range of the pore sizes, D, from 2 nm to 5 nm, the noble metal consists of a platinum cobalt alloy, an amount of the noble metal is 0.03 mg to 0.3 mg per cm 2 of electrode, an amount of the water-repellent material is 3% by weight to 7% by weight with respect to a total weight of the mesoporous carbon and the water-repellent material, and the water-repellent material is selected from one of polytetrafluoroethylene, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, and tetrafluoroethylene-hexafluoropropylene copolymer. 2. The fuel cell electrode catalyst according to claim 1 , wherein the mesoporous carbon is coated with the water-repellent material at a thickness of 1 nm or less. 3. The fuel cell electrode catalyst according to claim 1 , wherein the mesoporous carbon is prepared by heat treatment at a burning temperature of 1700° C. or higher and lower than 2300° C. or by heat treatment at a burning temperature of 1500° C. or higher and lower than 2100° C.
Assignees
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Classifications
- H01M4/9083Primary
on carbon or graphite · CPC title
Fuel cells · CPC title
characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title
- H01M4/926Primary
on carbon or graphite · CPC title
Polyesters derived from dicarboxylic acids and dihydroxy compounds (C08L67/06 takes precedence) · CPC title
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- What does patent US11258075B2 cover?
- A fuel cell electrode catalyst includes: a noble-metal-supported catalyst including a carbon support and a noble metal supported on the carbon support; and a water-repellent material with which the noble-metal-supported catalyst is modified. The carbon support is mesoporous carbon in which a pore volume of pores having a pore size of 2 nm to 5 nm is 2.1 ml/g to 2.4 ml/g. An amount of the water-…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/9083. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 22 2022 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).