CATALYST, METHOD FOR PRODUCING CATALYST, AND INTERMEDIATE PRODUCT
A catalyst having both durability and high activity, a method for manufacturing the catalyst, and an intermediate product suitable for manufacturing the catalyst are provided. A catalyst includes a nickel substrate, a nickel oxide layer containing NiOOH, and a layer containing NiFe.
1 . A catalyst comprising:
a nickel substrate;
a nickel oxide layer containing NiOOH; and
a layer containing NiFe.
2 . The catalyst according to claim 1 , wherein the nickel oxide layer has a thickness of 50 to 500 nm.
3 . The catalyst according to claim 1 , wherein a proportion of Fe is 4 to 20 mass % of a total amount of the catalyst.
4 . The catalyst according to claim 1 , wherein the catalyst is an electrode material for oxygen generation.
5 . A method for manufacturing the catalyst according to to claim 1 , the method comprising a step (I) of forming a nickel oxide layer containing NiOOH on a nickel substrate.
6 . The method according to claim 5 , wherein the step (I) comprises electrochemical oxidation of a nickel substrate.
7 . The method according to claim 5 , further comprising a step (II) of forming a layer containing NiFe on the nickel oxide layer after the step (I).
8 . The method according to claim 7 , wherein the step (II) includes electrodeposition of Fe.
9 . An intermediate product of the catalyst according to claim 1 , comprising:
a nickel substrate; and
a nickel oxide layer containing NiOOH formed on the nickel substrate.