Electrode for electrolytic applications

C - Chemistry – Metallurgy – 25 – B

Patent

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C25B 11/04 (2006.01) C25C 7/02 (2006.01)

Patent

CA 2761292

The invention relates to an electrode for electrolytic applications, optionally an oxygen- evolving anode, obtained on a titanium substrate and having a highly compact dual barrier layer comprising titanium and tantalum oxides and a catalytic layer. A method for forming the dual barrier layer comprises the thermal decomposition of a precursor solution applied to the substrate optionally followed by a quenching step and a lengthy thermal treatment at elevated temperature.

L'invention porte sur une électrode pour applications électrolytiques, facultativement pour une anode dégageant de l'oxygène, obtenue sur un substrat en titane et ayant une couche barrière double hautement compacte comprenant des oxydes de titane et de tantale et une couche catalytique. L'invention porte aussi sur un procédé pour former la couche barrière double comprenant la décomposition thermique d'une solution de précurseur appliquée sur le substrat éventuellement suivie d'une étape de refroidissement rapide, et d'un traitement thermique de longue durée à une température élevée.

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