Patent ID: 11891707
Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
Field: Surface technology, coating (Chemistry)
Classification: CPC C  Y | IPC C

Claim 0:
1. A method of making a Pd-coated electrode, the method comprising:
heating a glass electrode coated with a first coating of a layer of fluorine doped tin oxide (FTO) to a temperature in a range of 300 to 600° C.; and
depositing a second coating, by aerosol-assisted chemical vapor deposition, onto the glass electrode, wherein the second coating comprises a layer of a porous palladium, from an aerosol of a solution comprising a palladium complex and/or salt, with an inert gas carrier for a deposition time in a range of from 35 to 300 minutes, while heating at a temperature in a range of from 300 to 600° C.,
wherein, in the Pd-coated electrode:
the first coating is directly on the glass electrode,
the second coating is directly on the first coating,
the second coating comprises at least 97.5 wt. % palladium relative to a total weight of the second coating, and
the palladium in the second coating is in the form of porous, spongy-textured nanoclusters comprising palladium spheroid nanoparticles in cubic crystalline phase,
wherein the nanoclusters in the second coating have a cauliflower morphology with frazzled tips and edges,
the second coating has a thickness in a range of from 0.5 to 10 μm, and
the nanoclusters have an average largest dimension in a range of from 500 nm to 10 μm, and
wherein the Pd-coated electrode has a mass activity in a range of from 500 to 750 mA/mg in an oxygen evolution reaction.