Electrode catalyst

Patent metadata

Field	Value
Publication number	US-2021057758-A1
Application number	US-201916978306-A
Country	US
Kind code	A1
Filing date	Mar 5, 2019
Priority date	Mar 5, 2018
Publication date	Feb 25, 2021
Grant date	—

Abstract

This electrode catalyst of the present invention contains an electrically conductive material that supports a metal or a metal oxide, wherein electrical conductivity at 30° C. is 1×10 −13 Scm −1 or greater.

First claim

What is claimed is:

1 . An electrode catalyst comprising an electrically conductive material carrying a metal or a metal oxide, and having an electrical conductivity at 30° C. of 1×10 −13 Scm −1 or more.

2 . The electrode catalyst according to claim 1 , wherein said metal is a transition metal and said metal oxide is a transition metal oxide.

3 . The electrode catalyst according to claim 1 or 2 , wherein said metal comprises any one or two or more members selected from the group consisting of Pd, Pt, Au, Ir, Ru, Rh, and Ag.

4 . The electrode catalyst according to any one of claims 1 to 3 , comprising an alloy containing any one or two or more members selected from the group consisting of Pd, Pt, Ru, and Ir, and having an electrical conductivity at 30° C. of 1×10 −13 Scm −1 or more.

5 . The electrode catalyst according to claim 3 or 4 , wherein said Pd and Pd are in a solid solution state.

6 . The electrode catalyst according to claim 4 , wherein said alloy follows Vegard's law.

7 . A method for producing a carrier-supported metal alloy which is a method for producing an alloy of an electrode catalyst comprising an electrically conductive material carrying a metal or a metal oxide, and having an electrical conductivity at 30° C. of 1×10 −13 Scm −1 or more, the method comprising:
(a) a step of dissolving one or two metal reagents in a solvent;
(b) a step of bringing an electrically conductive material into contact;
(c) a step of reacting said metal reagent with said electrically conductive material, and then reducing a product obtained by the reaction with a metal hydride reagent; and
(d) a step of treating the product reduced by said metal hydride reagent at 20° C. to 500° C. in the presence of hydrogen.

8 . A method for producing ketones and carboxylic acids,
the method comprising a step of using an alcohol as a raw material and using an electrode catalyst comprising an electrically conductive material carrying a metal or a metal oxide and having an electrical conductivity at 30° C. of 1×10 −13 Scm −1 or more to carry out an electrochemical oxidation reaction of said alcohol.

9 . A fuel cell comprising an anode, a cathode and an electrolyte,
the fuel cell that comprises an electrode catalyst on a surface or inside of the anode, or on the electrolyte side of the anode, and directly generates electricity when alcohols are brought into contact with said electrode catalyst and electrochemically oxidized to produce ketones or carboxylic acids.

10 . An energy recovery system for recovering surplus electric power energy, the system comprising:
(a) a container for storing carboxylic acids; (b) a means for reducing carboxylic acids to alcohols using surplus electric power; (c) a means for storing the obtained alcohols; and (d) a means for oxidizing said alcohols to produce said carboxylic acids and generating electric power.

Assignees

• Japan Science & Tech Agency

Inventors

• Yamauchi Miho
• MORIMOTO Tatsuyoshi

Classifications

• C25B11/065

  Carbon · CPC title

• C25B11/089

  Alloys · CPC title

• C25B3/07

  Oxygen containing compounds · CPC title

• H01M4/8673

  Electrically conductive fillers · CPC title

• H01M4/921

  Alloys or mixtures with metallic elements · CPC title