Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1978-04-24
1981-07-14
Valentine, D. R.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204266, 204290R, 204294, 204284, C25B 1103, C25B 1112, C25B 900
Patent
active
042785251
ABSTRACT:
An air/oxygen electrode substrate for use as a cathode in alkali metal halide electrolysis processes is formed by compressing a prefused mixture of carbon black and a hydrophobic polymer such as polytetrafluoroethylene under high pressures and at a temperature in excess of the sintering temperature of the polymer and below its decomposition temperature. Optionally, the electrode may be formed having a core comprised of a metal mesh which acts to better distribute the applied voltage and to reinforce the electrode. Further, a sheet of hydrophobic backing material such as TEFLON fabric may be incorporated into the compressed mixture to increase the hydrophobic properties of the cathode. Electrocatalysts may then be deposited on the surface of the electrode substrate to produce an oxygen electrode having a significant voltage advantage over mild steel cathodes in alkali-halide electrolysis cells.
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Diamond Shamrock Corporation
Littlefield Stephen A.
Muserlian Charles A.
Valentine D. R.
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