Patent ID: 7553513

Claim:
A method for producing an electrochemical electrode comprising a conductive substrate and an active layer formed on the conductive substrate, wherein (1) the active layer comprises a nickel-containing nanostructured material having a dendritic structure formed by agglomerating a plurality of primary particles, and (2) each primary particle comprises a core and a shell surrounding the core wherein the core is formed of a nickel nanocrystal and the shell is formed of a nickel oxide film; (3) the method for producing such an electrochemical electrode comprising: Step 1 of obtaining nickel nanocrystal particles, Step 2 of obtaining primary particles by forming a nickel oxide film on the surface of each nickel nanocrystal particle, and Step 3 of forming a dendritic structure by agglomerating a plurality of the primary particles by depositing the primary particles substantially perpendicular to a conductive substrate, wherein a magnetic field is applied substantially perpendicularly to the conductive substrate in Step 3.