Bimetallic non-PGM alloys for the electrooxidation of gas fuels in alkaline media

Patent metadata

Field	Value
Publication number	US-11289710-B1
Application number	US-201815952881-A
Country	US
Kind code	B1
Filing date	Apr 13, 2018
Priority date	Jan 8, 2013
Publication date	Mar 29, 2022
Grant date	Mar 29, 2022

Abstract

Electrooxidative materials and various method for preparing electrooxidative materials formed from an alloy of oxophilic and electrooxidative metals. The alloy may be formed using methods such as spray pyrolysis or mechanosynthesis and may or may not include a supporting material which may or may not be sacrificial as well as the materials.

First claim

What is claimed is:

1. A method for forming an electrooxidative material comprising:
mixing:
precursors of Ni wherein the precursors are selected from the group consisting of metal nitrates, chlorides, and acetates:
precursors of an electrooxidative metal selected from the group consisting of copper (Cu) and molybdenum (Mo); and
particulate supporting material or precursor thereof, to form a mixture wherein the supporting material or precursor thereof is dispersed within the mixture;
wherein the Ni precursors and electro oxidative metal precursors are mixed at a ratio of between 85:15 and 97:3 and

heat treating the mixture, thus forming an electrooxidative material having an irregular and unpredictable structure shape.

2. The method of claim 1 wherein the Ni and electro oxidative metal are mixed at a ratio of between 90:10 and 95:5.

3. The method of claim 1 wherein the Ni and electro oxidative metal are mixed at a ratio of 90:10.

4. The method of claim 1 wherein the Ni and electro oxidative metal are mixed at a ratio of 95:5.

5. The method of claim 1 wherein the particulate supporting material is carbon-based.

6. The method of claim 5 wherein the particulate supporting material is a carbon black material.

7. The method of claim 1 wherein the dispersed particulate supporting material further comprises a sacrificial support, the method further comprising removing the sacrificial support after the heat treatment to produce a porous electrooxidative material.

8. The method of claim 7 wherein the dispersed particulate supporting material is only a sacrificial support, the method further comprising removing the sacrificial support after the heat treatment to produce a self-supported porous electrooxidative material.

9. The method of claim 1 wherein the supporting material is non-porous.

10. The method of claim 1 further comprising atomizing the mixture.

11. The method of claim 1 further comprising ball-milling the mixture.

12. A material formed by the method of claim 1 .

13. A material formed by the method of claim 1 .

Assignees

• Atanassov Plamen B
• Serov Alexey
• Padilla Monica
• Martinez Ulises A
• Unm Rainforest Innovations

Inventors

• Atanassov Plamen B
• Serov Alexey
• Padilla Monica
• Martinez Ulises A

Classifications

• Y02E60/50

  Fuel cells · CPC title

• H01M4/9091

  Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state · CPC title

• H01M4/9075

  Catalytic material supported on carriers, e.g. powder carriers (H01M4/8807, H01M4/881, H01M4/8814, H01M4/925 take precedence) · CPC title

• H01M4/9041

  Metals or alloys (H01M4/92 takes precedence) · CPC title

• H01M4/8882

  Heat treatment, e.g. drying, baking · CPC title