Electrocatalytic coating

Details Electrocatalytic coating Electrocatalytic coating

C - Chemistry, Metallurgy

25

B

117/111, 117/91,

C25B 11/08 (2006.01) C23C 18/04 (2006.01) C23C 18/12 (2006.01) C25B 1/34 (2006.01) C25B 11/04 (2006.01) C25B 11/06 (2006.01)

Patent

CA 2030092

A coating is now disclosed which is especially serviceable as an improved electrocatalytic coating for an electrode. The coating is a crystalline coating of mixed oxides. The oxides are of iridium, ruthenium and titanium, in very specially defined proportions. When the coating is present on an electrically conductive metal substrate that can serve as an electrode, such electrode has, in combination, the characteristics of reduced oxygen evolution in a membrane cell, low chlorine electrode potentials, plus reduced coating weight loss in a caustic environment.

Revêtement spécialement utile comme revêtement électrocatalytique amélioré pour une électrode. C'est un revêtement cristallin d'oxydes mixtes. Il s'agit d'oxydes d'iridium, de ruthénium et de titane, dans des proportions définies de façon très spéciale. Lorsque le revêtement est présent sur un support de métal conducteur qui peut servir d'électrode, l'électrode a, en combinaison, les caractéristiques d'évolution réduite de l'oxygène dans une cellule à membrane, faibles potentiels d'électrode au chlore et perte réduite de poids de revêtement en milieu corrosif.

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