Gas Diffusion Electrodes and Methods for Fabricating and Testing Same
US-2015376803-A1 · Dec 31, 2015 · US
Electrode catalyst, and membrane electrode assembly and fuel cell using electrode catalyst
US2019336956A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019336956-A1 |
| Application number | US-201716094562-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 6, 2017 |
| Priority date | Apr 19, 2016 |
| Publication date | Nov 7, 2019 |
| Grant date | — |
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- Title
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Abstract
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Provided is a catalyst that can exhibit high activity. The catalyst is an electrode catalyst having catalytic metals supported on a catalyst support, in which the catalytic metals include platinum and a metal component other than platinum; the electrode catalyst has mesopores having a mode radius of pore distribution of mesopores having a radius of 1 nm or more, of 1 nm or more and less than 2.5 nm; alloy microparticles of platinum and the metal component other than platinum are supported inside the mesopores; and a molar content ratio of platinum with respect to the metal component other than platinum in the alloy microparticles supported inside the mesopores is 1.0 to 10.0.
First claim
Opening claim text (preview).
1 . An electrode catalyst in which catalytic metals are supported on a catalyst support, wherein the catalytic metals include platinum and a metal component other than platinum, the electrode catalyst has mesopores having a radius of 1 nm or more, with a mode radius of pore distribution of the mesopores being 1 nm or more and less than 2.5 nm, alloy microparticles of platinum and the metal component other than platinum are supported inside the mesopores, and a molar content ratio of platinum with respect to the metal component other than platinum in the alloy microparticles supported inside the mesopores is 1.0 to 10.0. 2 . The electrode catalyst according to claim 1 , wherein the electrode catalyst has a pore volume of the mesopores of 0.4 cc/g of the support or more. 3 . The electrode catalyst according to claim 1 , wherein the alloy microparticles supported inside the mesopores have an average diameter of 2.0 nm or more. 4 . The electrode catalyst according to claim 1 , wherein the alloy microparticles in the electrode catalyst have, as an internal structure, an intermetallic compound structure having platinum atoms and metal atoms other than platinum arranged with regularity. 5 . The electrode catalyst according to claim 4 , wherein the alloy microparticles in the electrode catalyst have an L1 2 structure, and the L1 2 structure has an extent of ordering of 30% to 100%. 6 . The electrode catalyst according to claim 1 , wherein the metal component other than platinum is cobalt (Co). 7 . A membrane electrode assembly comprising the electrode catalyst according to claim 1 and an electrolyte. 8 . A fuel cell comprising the membrane electrode assembly according to claim 7 .
Assignees
Inventors
Classifications
characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title
Cobalt and noble metals · CPC title
- H01M4/921Primary
Alloys or mixtures with metallic elements · CPC title
- H01M4/925Primary
supported on carriers, e.g. powder carriers · CPC title
Coating with slurry or ink · CPC title
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Frequently asked questions
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- What does patent US2019336956A1 cover?
- Provided is a catalyst that can exhibit high activity. The catalyst is an electrode catalyst having catalytic metals supported on a catalyst support, in which the catalytic metals include platinum and a metal component other than platinum; the electrode catalyst has mesopores having a mode radius of pore distribution of mesopores having a radius of 1 nm or more, of 1 nm or more and less than 2.…
- Who is the assignee on this patent?
- Nissan Motor, Tanaka Precious Metal Ind, Nippon Steel Chemical & Mat 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 Thu Nov 07 2019 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).