Patent ID: 11965256
Assignee: NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY
Field: Surface technology, coating (Chemistry)
Classification: CPC C  Y | IPC C

Claim 2:
3. A method for producing an alkaline water electrolysis anode, comprising:
subjecting an electrically conductive substrate having a surface coated with an aqueous solution comprising a lithium ion and a nickel ion to a first thermal treatment so as to form an intermediate layer on the surface of the electrically conductive substrate, the intermediate layer comprising a lithium-containing nickel oxide represented by compositional formula LixNi2-xO2 wherein x is in a range of 0.02≤x≤0.5, and at least the surface of the electrically conductive substrate comprising nickel or a nickel base alloy;
subjecting a precursor comprising a lithium component, a nickel component, and a manganese component to a second thermal treatment so as to form a layer comprising a lithium composite oxide on a surface of the intermediate layer; and
reacting nitronium tetrafluoroborate (NO2BF4) with the lithium composite oxide, thereby chemically performing delithiation, so as to form, on the surface of the intermediate layer, a catalyst layer comprising a nickel-containing metal oxide having a controlled lithium content and having a spinel structure, wherein
the nickel-containing metal oxide comprises nickel (Ni) and manganese (Mn), and has an atom ratio of Li/Ni/Mn/O in a range of (0.0 to 0.8)/(0.4 to 0.6)/(1.0 to 1.8)/4.0.