STUDY OF WOLFRAM CARBIDE CATHODE USEDÂ Â
    FOR WATER
ELECTROLYSISÂ Â Â Â Â Â Â
Continuous cathodic electrolysis,
of a cobalt coated widia electrode in a  saturated NaOH aqueous solution, was carried
out to assess the electrode’s durability. The electrode’s potential under the
same operation conditions was exponentialy dependent of the current density.
A
cobalt widia coated electrode shows little variation in hydrogen evolution
potential, during constant current electrolysis in an
NaOH solution.
We found out that Co/widia,
used as hydrogen electrode, lowers the electric energy costs and increases both
of electrolyzer’s efficiency and the hydrogen production.
