Catalyst, cathode, and electrolytic device

Abstract

A catalyst is provided. The catalyst used for electrolytic reduction of carbon dioxide and/or carbon monoxide includes copper particles supported on a surface of a diamond-like carbon particle, a part of the surface of the diamond-like carbon particle being covered with the copper particles.

What is claimed is: 
     
         1 . A catalyst used for electrolytic reduction of carbon dioxide and/or carbon monoxide, comprising
 copper particles supported on a surface of a diamond-like carbon particle,   a part of the surface of the diamond-like carbon particle being covered with the copper particles.   
     
     
         2 . The catalyst according to  claim 1 , wherein coverage on the diamond-like carbon particle with the copper particles is 30% or more and 70% or less. 
     
     
         3 . The catalyst according to  claim 1 , wherein an average particle diameter of the diamond-like carbon particles is 5 nm or more and 50 nm or less. 
     
     
         4 . The catalyst according to  claim 1 , wherein an average particle diameter of the copper particles is 0.5 nm or more and 1.2 nm or less. 
     
     
         5 . A cathode comprising the catalyst according to  claim 1 , the catalyst being supported on a surface of a gas diffusion layer. 
     
     
         6 . An electrolytic device comprising the cathode according to  claim 5 .