Fuel cell catalyst including carbon support particles with metal carbide layer and catalytic material and fuel cell using the same

Patent metadata

Field	Value
Publication number	US-9147884-B2
Application number	US-201013635423-A
Country	US
Kind code	B2
Filing date	May 10, 2010
Priority date	May 10, 2010
Publication date	Sep 29, 2015
Grant date	Sep 29, 2015

Abstract

A supported catalyst includes a plurality of support particles that each include a carbon support and a layer disposed around the carbon support. The layer is selected from a metal carbide, metal oxycarbide, and combinations thereof. A catalytic material is disposed on the layers of the support particles.

First claim

What is claimed is:

1. A supported catalyst comprising:
a plurality of support particles, the support particles each including a carbon support and a layer disposed around the carbon support, the layer being selected from a group consisting of metal carbide, metal oxycarbide, and combinations thereof, wherein a metal of the layer consists of nickel and molybdenum; and
a catalytic material disposed on the layers of the support particles.

2. The supported catalyst as recited in claim 1 , wherein the layer includes a sub-stoichiometric amount of oxygen relative to an amount of the metal in the layer.

3. The supported catalyst as recited in claim 1 , wherein the metal of the layer includes particles having a particle size less than 100 nm.

4. The supported catalyst as recited in claim 1 , wherein the metal of the layer includes particles having a particle size less than 30 nm.

5. The supported catalyst as recited in claim 1 , wherein the metal of the layer includes particles having a particle size less than 10 nm.

6. The supported catalyst as recited in claim 1 , wherein the catalytic material comprises platinum.

7. The supported catalyst as recited in claim 1 , wherein the carbon supports have an average surface area of 100-2500 m 2 /g.

8. The supported catalyst of claim 1 wherein the layer is a metal oxycarbide, the metal oxycarbide being formed by treatment of the metal in an oxygen environment.

9. A supported catalyst, comprising:
a plurality of support particles, the support particles each including a carbon support and a layer disposed around the carbon support, the layer including a metal oxycarbide, wherein a metal of the layer consists of nickel and molybdenum; and
a catalytic material disposed on the layers of the support particles.

10. The supported catalyst as recited in claim 9 , wherein the carbon support has an average surface area of 100-2500 m 2 /g.

11. A fuel cell comprising:
an electrolyte;
an anode catalyst and a cathode catalyst disposed on respective opposing sides of the electrolyte; and
interconnects located adjacent to the anode catalyst and the cathode catalyst for delivering reactants, and wherein at least one of the anode catalyst or the cathode catalyst includes a plurality of support particles, the support particles each having a carbon support and a layer disposed around the carbon support, the layer being selected from a group consisting of metal carbide, metal oxycarbide, and combinations thereof, wherein a metal of the layer consists of nickel and molybdenum, and a catalytic material disposed on the layers of the support particles.

12. The fuel cell of claim 11 wherein the layer is a metal oxycarbide, the metal oxycarbide being formed by treatment of the metal in an oxygen environment.

Assignees

• Merzougui Belabbes
• Shao Minhua
• Protsailo Lesia V
• Chen Jingguang
• Audi Ag

Inventors

• Merzougui Belabbes
• Shao Minhua
• Protsailo Lesia V
• Chen Jingguang

Classifications

• H01M4/925

  supported on carriers, e.g. powder carriers · CPC title

• H01M4/92 Primary

  Metals of platinum group (H01M4/94 {, H01M4/9058} take precedence) · CPC title

• Y02E60/50

  Fuel cells · CPC title