Carbon black, electrode catalyst and fuel cell using same, and method for producing carbon black
US-2019030514-A1 · Jan 31, 2019 · US
Electrode catalyst for fuel cell, and fuel cell using same
US11949113B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11949113-B2 |
| Application number | US-201916979616-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 13, 2019 |
| Priority date | Mar 16, 2018 |
| Publication date | Apr 2, 2024 |
| Grant date | Apr 2, 2024 |
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Abstract
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An electrode catalyst for a fuel cell, the electrode catalyst having high initial activity and being capable of long-term retention of said activity; and a fuel cell using the electrode catalyst for a fuel cell. The electrode catalyst for a fuel cell includes catalyst metal particles that include platinum or a platinum alloy, and carrier particles that carry said catalyst metal particles, wherein the carrier particles are a carbonaceous material having a cumulative pore volume of 0.10 cc/g or less in the diameter range of 2 nm or less, and a BET specific surface area of greater than 900 m2/g; and a fuel cell comprising the electrode catalyst for a fuel cell.
First claim
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The invention claimed is: 1. An electrode catalyst for a fuel cell comprising catalyst metal particles containing platinum or a platinum alloy and carrier particles on which the catalyst metal particles are carried, wherein the carrier particles are a carbonaceous material having a cumulative pore volume of pores having a diameter of 2 nm or less of 0.01 cc/g or more and 0.09 cc/g or less, a ratio of the cumulative pore volume of pores having a diameter of 2 nm or less to a total cumulative pore volume of the carbonaceous material of 0.01 or more and 0.10 or less, and a BET specific surface area of more than 900 m 2 /g. 2. The electrode catalyst according to claim 1 , wherein the carbonaceous material has a cumulative pore volume of pores having a diameter of 6 nm or less of 0.25 cc/g or more. 3. The electrode catalyst according to claim 1 , wherein the total cumulative pore volume of the carbonaceous material is 1.0 cc/g or more. 4. The electrode catalyst according to claim 1 , wherein the BET specific surface area of the carbonaceous material is 1500 m 2 /g or less. 5. The electrode catalyst according to claim 1 , wherein a ratio of a number of the catalyst metal particles having a diameter of 2 nm or less is 23% or less with respect to a total number of the catalyst metal particles. 6. The electrode catalyst according to claim 1 , wherein a number average particle size of the catalyst metal particles is 2.8 to 4.0 nm. 7. A fuel cell comprising the electrode catalyst according to claim 1 . 8. The electrode catalyst according to claim 2 , wherein the total cumulative pore volume of the carbonaceous material is 1.0 cc/g or more. 9. The electrode catalyst according to claim 2 , wherein the BET specific surface area of the carbonaceous material is 1500 m 2 /g or less. 10. The electrode catalyst according to claim 3 , wherein the BET specific surface area of the carbonaceous material is 1500 m 2 /g or less. 11. The electrode catalyst according to claim 2 , wherein the cumulative pore volume of pores having a diameter of 6 nm or less of the carbonaceous material is 1.20 cc/g or less. 12. The electrode catalyst according to claim 1 , wherein the cumulative pore volume of pores having a diameter of 6 nm or less of the carbonaceous material is 0.50 cc/g or more and 1.00 cc/g or less. 13. The electrode catalyst according to claim 1 , wherein a cumulative pore volume of pores having a diameter of 10 nm or less of the carbonaceous material is 0.50 cc/g or more and 1.50 cc/g or less. 14. The electrode catalyst according to claim 1 , wherein a cumulative pore volume of pores having a diameter of 10 nm or less of the carbonaceous material is 0.70 cc/g or more and 1.00 cc/g or less. 15. The electrode catalyst according to claim 1 , wherein the total cumulative pore volume of the carbonaceous material is 1.10 cc/g or more and 2.00 cc/g or less. 16. The electrode catalyst according to claim 1 , wherein the total cumulative pore volume of the carbonaceous material is 1.20 cc/g or more and 1.50 cc/g or less. 17. The electrode catalyst according to claim 1 , wherein the ratio of the cumulative pore volume of pores having a diameter of 2 nm or less to the total cumulative pore volume of the carbonaceous material is 0.01 or more and 0.08 or less. 18. The electrode catalyst according to claim 1 , wherein the ratio of the cumulative pore volume of pores having a diameter of 2 nm or less to the total cumulative pore volume of the carbonaceous material is 0.01 or more and 0.06 or less.
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- What does patent US11949113B2 cover?
- An electrode catalyst for a fuel cell, the electrode catalyst having high initial activity and being capable of long-term retention of said activity; and a fuel cell using the electrode catalyst for a fuel cell. The electrode catalyst for a fuel cell includes catalyst metal particles that include platinum or a platinum alloy, and carrier particles that carry said catalyst metal particles, where…
- Who is the assignee on this patent?
- Cataler Corp, Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M4/926. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 02 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 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).