Patent ID: 9640328
Date: 2017-05-02
CPC Classifications: B82Y,H01G,H01M,Y02E

Claim:
1. An electrode comprising: a substrate; a catalytic metal layer formed on the substrate, the metal layer formed of any one or an alloy of two or more selected from the group consisting of Pt, Fe, Co, Ni, Ru, Rh, Pd, Os, Ir, Cu, Ag, Au, Sn, Al, Cr, and Ti; a plurality of metal nanocups spaced apart from one another and disposed on the substrate metal layer, and openings thereof are aligned above the substrate metal layer, and a spacing between each of the nanocups, wherein the metal layer catalyzes an oxidation or reduction reaction in the spacing between the nanocups, wherein the nanocups have a hollow cylindrical shape in which a lower surface thereof is closed; wherein the nanocups and the metal layers comprise the same metal or alloy.