Catalyst structure for electrolysis of water and method of forming the same

Patent metadata

Field	Value
Publication number	US-2017051418-A1
Application number	US-201614988706-A
Country	US
Kind code	A1
Filing date	Jan 5, 2016
Priority date	Aug 20, 2015
Publication date	Feb 23, 2017
Grant date	—

Abstract

The disclosure provides a catalyst structure for electrolysis of water. The catalyst structure includes a ferric oxide support and a plurality of cobalt-containing compound catalysts. The plurality of cobalt-containing compound catalysts attach to a surface of the ferric oxide support. The disclosure also provides a method of forming a catalyst structure for electrolysis of water.

First claim

What is claimed is:

1 . A catalyst structure for electrolysis of water, comprising:
a ferric oxide support; and a plurality of cobalt-containing compound catalysts, wherein the plurality of cobalt-containing compound catalysts attach to a surface of the ferric oxide support.

2 . The catalyst structure of claim 1 , wherein the ferric oxide support has a nondense structure.

3 . The catalyst structure of claim 2 , wherein the nondense structure is a flocculent structure, a fleeced ball-like structure or a steel wool-like structure.

4 . The catalyst structure of claim 1 , wherein a portion of the ferric oxide support is exposed in between the plurality of cobalt-containing compound catalysts.

5 . The catalyst structure of claim 1 , wherein the plurality of cobalt-containing compound catalysts are cobalt-containing oxide catalysts, cobalt-containing hydroxide catalysts or a combination thereof.

6 . The catalyst structure of claim 1 , wherein a material of the plurality of cobalt-containing compound catalysts is cobalt hydroxide.

7 . A method of forming catalyst structure for electrolysis of water, comprising:
providing a first solution comprising ferric chloride and oxalic acid; heating the first solution to form ferric oxide; and mixing the ferric oxide and a cobalt-containing compound catalyst.

8 . The method of claim 7 , wherein mixing the ferric oxide and the cobalt-containing compound catalyst comprises:
providing a second solution comprising the ferric oxide and cobalt chloride; adjusting the second solution to alkaline; and heating the second solution.

9 . The method of claim 8 , wherein heating the first solution and heating the second solution are by microwave assisted hydrothermal method.

10 . The method of claim 8 , wherein a weight ratio of ferric oxide to cobalt chloride is 3:55-3:65.

Assignees

• Univ Nat Taiwan Science Tech

Inventors

• Wang chen-hao
• Chen Guan-Cheng
• Wang Kai-Chin

Classifications

• C25B11/031

  Porous electrodes · CPC title

• C25B1/04

  by electrolysis of water · CPC title

• C25B11/091 Primary

  consisting of at least one catalytic element and at least one catalytic compound; consisting of two or more catalytic elements or catalytic compounds · CPC title

• C25B11/0478 Primary

  Chemistry & Metallurgy · mapped topic

• Y02E60/36

  Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title