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US 12,651,754 B2Granted
Mesoporous support for a catalyst for a fuel cell and method of producing thereof
AssigneesHyundai Motor Company, Kia Corporation
InventorYoung Jung Heo
Life of this patent
Estimating the term…
Abstract
Disclosed are a mesoporous support for a catalyst of a fuel cell, which includes a graphite layer formed only on its surface and a method producing the same. The support may include a substrate; a graphite layer in a crystalline form and formed on a surface of a substrate, and further include a first pore having an average pore size of less than about 2 nm and a second pore having an average pore size of about 2 nm to 50 nm.
Claims19
A fuel cell comprising:
- a catalyst comprising a support in the fuel cell and an active metal loaded on the support;
- wherein the support comprises;
- a core comprising an amorphous carbon particle;
- a graphite layer disposed on a surface of the core, wherein the graphite layer is crystalline;
- and
- a first pore having an average pore size of less than about 2 nm, and
- a second pore having an average pore size of about 2 nm to 50 nm,
- wherein the support satisfies Formula 1,
- V
- 2
- V
- 0
- ×
- 100
- ≥
- 40
- [
- Formula
-
- 1
- ]
- wherein V0 is a total pore volume of the support, and V2 is a volume of the second pore.
19 more elements
A method producing a support for a catalyst of a fuel cell comprising:
- preparing a dispersion comprising an amorphous carbon particle;
- preparing an admixture comprising a salt of a transition metal and the dispersion;
- producing a carbon-transition metal composite from the admixture;
- heat treating the carbon-transition metal composite;
- and
- removing the transition metal from the heat-treated carbon-transition metal composite,
- wherein the support comprises a core, a graphite layer disposed on a surface of the core, and
- wherein the graphite layer is crystalline;
- wherein the catalyst is in the fuel cell;
- wherein the support comprises a first pore having an average pore size of less than about 2 nm, and a second pore having an average pore size of about 2 nm to 50 nm, and
- wherein the support satisfies Formula 1,
- V
- 2
- V
- 0
- ×
- 100
- ≥
- 40
- [
- Formula
-
- 1
- ]
- where V0 is a total pore volume of the support, and V2 is a volume of the second pore.
22 more elements
Dependencies are inferred from the claim text.