Anode for oxygen evolution and relevant substrate

Details Anode for oxygen evolution and relevant substrate Anode for oxygen evolution and relevant substrate

C - Chemistry, Metallurgy

25

C

C25C 7/02 (2006.01) C25B 11/00 (2006.01) C25D 17/10 (2006.01)

Patent

CA 2474816

The invention concerns an anode for gas evolution in electrochemical applications comprising a titanium or other valve metal substrate characterized by a surface with a low average roughness, having a profile typical of a localized attack on the crystal grain boundary. The invention further describes a method for preparing the anodic substrate of the invention comprising a controlled etching in a sulphuric acid solution.

Cette invention se rapporte à une anode servant au dégagement d'oxygène dans des applications électrochimiques et comprenant un substrat en titane ou en un autre métal valve, se caractérisant par une surface ayant une faible rugosité moyenne et un profil typique d'une attaque localisée sur la limite des grains de cristal. Cette invention concerne en outre un procédé servant à préparer ce substrat anodique et consistant à réaliser une gravure contrôlée dans une solution d'acide sulfurique.

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