Ruthenium coated cathodes
First Claim
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1. In an electrolytic cell for the production of halogen and caustic from alkali metal halide solutions wherein the cell is equipped with anodes, cathodes, and means separating said anodes from said cathodes, the improvement which comprises a composite cathode comprising a metal substrate having thereon an intermediate coating of cobalt and an overcoating of ruthenium.
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Abstract
Composite cathodes comprising a metal substrate having thereon an intermediate coating of cobalt and an overcoating of ruthenium for use in electrolytic cells for the electrolysis of aqueous alkali metal halide solutions reduces the cell voltage requirements in comparison to the conventional ferrous metal cathodes traditionally used in such cells.
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10 Claims
- 1. In an electrolytic cell for the production of halogen and caustic from alkali metal halide solutions wherein the cell is equipped with anodes, cathodes, and means separating said anodes from said cathodes, the improvement which comprises a composite cathode comprising a metal substrate having thereon an intermediate coating of cobalt and an overcoating of ruthenium.
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