Air cathode for air batteries and air battery
US-9225018-B2 · Dec 29, 2015 · US
Catalyst layer
US2022190351A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022190351-A1 |
| Application number | US-202117543843-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 7, 2021 |
| Priority date | Dec 10, 2020 |
| Publication date | Jun 16, 2022 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
To provide a catalyst layer that is low in gas diffusion resistance and proton resistance even when a support having a small specific surface area is used. The catalyst layer is a catalyst layer for fuel cells, wherein the catalyst layer comprises a catalyst metal, a support and a conductive additive; wherein the support supports the catalyst metal; wherein a specific surface area of the support is 600 m 2 /g-C or less; wherein the conductive additive does not support the catalyst metal and has a larger aspect ratio than the support; wherein the aspect ratio of the conductive additive is more than 10; wherein, when a total mass of the catalyst layer is 100 mass %, a percent of the conductive additive contained in the catalyst layer is more than 2 mass % and less than 20 mass %; and wherein the conductive additive is a non-hydrophilized conductive additive.
First claim
Opening claim text (preview).
1 . A catalyst layer for fuel cells, wherein the catalyst layer comprises a catalyst metal, a support and a conductive additive; wherein the support supports the catalyst metal; wherein a specific surface area of the support is 600 m 2 /g-C or less; wherein the conductive additive does not support the catalyst metal and has a larger aspect ratio than the support; wherein the aspect ratio of the conductive additive is more than 10; wherein, when a total mass of the catalyst layer is 100 mass %, a percent of the conductive additive contained in the catalyst layer is more than 2 mass % and less than 20 mass %; and wherein the conductive additive is a non-hydrophilized conductive additive. 2 . The catalyst layer according to claim 1 , wherein the aspect ratio of the conductive additive is 18 or more and 40 or less. 3 . The catalyst layer according to claim 1 , wherein, when the total mass of the catalyst layer is 100 mass %, the percent of the conductive additive contained in the catalyst layer is 7 mass % or more and 15 mass % or less. 4 . The catalyst layer according to claim 1 , wherein the support and the conductive additive are carbonaceous materials.
Assignees
Inventors
Classifications
- H01M4/8673Primary
Electrically conductive fillers · CPC title
- H01M4/9041Primary
Metals or alloys (H01M4/92 takes precedence) · CPC title
on carbon or graphite · CPC title
- H01M4/90Primary
Selection of catalytic material · CPC title
Fuel cells · CPC title
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- What does patent US2022190351A1 cover?
- To provide a catalyst layer that is low in gas diffusion resistance and proton resistance even when a support having a small specific surface area is used. The catalyst layer is a catalyst layer for fuel cells, wherein the catalyst layer comprises a catalyst metal, a support and a conductive additive; wherein the support supports the catalyst metal; wherein a specific surface area of the suppor…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/8673. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 16 2022 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).