Water oxidation catalyst including cobalt molybdenum

Patent metadata

Field	Value
Publication number	US-9809889-B2
Application number	US-201414471921-A
Country	US
Kind code	B2
Filing date	Aug 28, 2014
Priority date	Aug 28, 2014
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

A process for oxidizing water using hydrated cobalt molybdenum is disclosed. A plurality of hydrated cobalt molybdenum nanoparticles are supported on an electrode and are able to catalytically interact with water molecules generating oxygen. The catalyst can be used as part of an electrochemical or photo-electrochemical cell for the generation of electrical energy.

First claim

Having described our invention, we claim:

1. A process for oxidizing water, the process comprising:
providing hydrated cobalt molybdenum;
providing water; and
placing the water into contact with the hydrated cobalt molybdenum, the hydrated cobalt molybdenum catalyzing the oxidation of water.

2. The process of claim 1 , wherein the hydrated cobalt molybdenum is a plurality of hydrated cobalt molybdenum nanoparticles.

3. The process of claim 2 , further including applying an electrical potential between the hydrated cobalt molybdenum and the water.

4. The process of claim 2 , further including adding a photo-sensitizer to the water and exposing the water with photo-sensitizer to electromagnetic radiation, the photo-sensitizer providing an electrical potential between the hydrated cobalt molybdenum and the water.

5. The process of claim 4 , wherein the photo-sensitizer is a ruthenium-tris(2,2′-bipyridyl) compound.

6. The process of claim 1 , wherein the hydrated cobalt molybdenum has a CoMoO4: H 2 O ratio of from 1:1 to 1:4.

Assignees

• Toyota Motor Eng & Mfg North America Inc

Inventors

• Mcdonald Kenneth James
• Jia Hongfei

Classifications

• C01P2002/85

  by XPS, EDX or EDAX data · CPC title

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• C01G51/40

  Complex oxides containing cobalt and at least one other metal element · CPC title

• C01B3/042 Primary

  Decomposition of water (by electrolysis of water C25B1/04) · CPC title

• C25B1/04

  by electrolysis of water · CPC title