Photocatalytic electrode and fuel cell

Details Photocatalytic electrode and fuel cell Photocatalytic electrode and fuel cell

H - Electricity

01

M

H01M 4/00 (2006.01) B01J 21/18 (2006.01) B01J 23/00 (2006.01) B01J 23/40 (2006.01) B01J 27/06 (2006.01) H01M 4/88 (2006.01)

Patent

CA 2647323

The invention provides an electrode comprising an electrically conductive material having a surface capable of producing surface enhanced Raman scattering of incident light from an adsorbate material adsorbed on the surface of the electrode. The adsorbate is substantially reducible and not substantially oxidizable. The surface of the electrode can be microroughened and include, for example, a plurality of adatoms or clusters of adatoms of a metallic material. The adatoms or clusters of adatoms form sites for photocatalysis of electroreduction when the electrode is irradiated with a light source. The invention also includes a method for making the electrode, and a method of generating electricity using the electrode. In accordance with a further aspect of the invention, a fuel cell is provided including the electrode of the invention.

L'invention concerne une électrode comprenant un matériau conduisant l'électricité ayant une surface pouvant produire de la diffusion Raman exaltée de surface de lumière incidente à partir d'un matériau adsorbé sur la surface de l'électrode. L'adsorbat est sensiblement réductible et sensiblement non oxydable. La surface de l'électrode peut être micro-rugosifiée et comprend, par exemple une pluralité d'atomes adsorbés ou d'agglomérats d'atomes adsorbés de matériau métallique. Les atomes adsorbés ou les agglomérats d'atomes adsorbés forment des sites d'électro-réduction photocatalytique quand l'électrode est éclairée par une source lumineuse. L'invention concerne également un procédé de fabrication de l'électrode et un procédé de génération d'électricité utilisant ladite électrode. Un autre aspect de l'invention concerne une pile à combustible incluant l'électrode de l'invention.

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