Anode for alkaline water electrolysis

Abstract

An anode for alkaline water electrolysis includes a conductive substrate having at least a surface made of nickel or a nickel-base alloy and a lithium-containing nickel oxide catalytic layer formed on a surface of the substrate. The molar ratio (Li/Ni) of lithium and nickel in the catalytic layer is in the range of 0.005 to 0.15.

1 . An anode for alkaline water electrolysis, comprising:
 a conductive substrate having at least a surface made of nickel or a nickel-base alloy; and   a lithium-containing nickel oxide catalytic layer formed on the surface of the substrate,   wherein a molar ratio (Li/Ni) of lithium and nickel in the catalytic layer is in the range of 0.005 to 0.15.   
     
     
         2 . The anode for alkaline water electrolysis according to  claim 1 , wherein the anode is used to perform alkaline water electrolysis using electric power with large power fluctuations that is generated by wind power, solar power, or the like. 
     
     
         3 . A method for producing an anode for alkaline water electrolysis, the method comprising:
 providing a solution containing lithium ions onto a surface of a conductive substrate having at least a surface made of nickel or a nickel-base alloy; and   heat-treating the substrate in an atmosphere containing oxygen at a temperature of 900° C. to 1000° C. to form a lithium-containing nickel oxide catalytic layer,   wherein a molar ratio (Li/Ni) of lithium and nickel in the catalytic layer is in the range of 0.005 to 0.15.   
     
     
         4 . The method according to  claim 3 , wherein the heat treatment is performed for 5 to 60 minutes. 
     
     
         5 . The method according to  claim 3 , wherein nickel ions are contained in the solution containing lithium ions.