Photolysis of water using rhodate semiconductive electrodes

Details Photolysis of water using rhodate semiconductive electrodes Photolysis of water using rhodate semiconductive electrodes

1977-09-26

1979-03-13

Mack, John H.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204266, 204278, 204291, 204DIG3, 429111, 252 623V, 252 623BT, C25B 104, H01M 630

Patent

active

041441478

ABSTRACT:
Decomposition of water into hydrogen and oxygen by sunlight is accomplished by using a rhodate p-type semiconductor as cathode and an n-type semiconductor or a metal as anode. A cell exposed to sunlight using a rhodate cathode and an n-type TiO.sub.2 anode decomposes the contained water and also generates electric power.

REFERENCES:
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patent: 3644147 (1972-02-01), Young
patent: 3663414 (1972-05-01), Martinsons et al.
patent: 3925212 (1975-12-01), Tchernev
patent: 4011149 (1977-03-01), Nozik
patent: 4042758 (1977-08-01), Weinstein et al.
D. T. Sawyer et al., "Experimental Electrochemistry for Chemists", Wiley (1974), pp. 34-47.
H. Yoneyama et al., "A Photo-Electrochemical Cell with Production of Hydrogen & Oxygen by a Cell Reaction", Electrochimica Acta, vol. 20, pp. 341-345 (1975).
A. J. Nozik, "p-n Photoelectrolysis Cells", Appl. Phys. Lett., vol. 29, pp. 150-153 (1976).
R. Memming, "Electrochemical Properties of Gallium Phosphide in Aqueous Solutions", Electrochimica Acta, vol. 13, pp. 1299-1310 (1968).
J. L. Fox, "Rhodium Complex Splits Water Using Sunlight", Chem. and Eng. News, Aug. 1, 1977, pp. 15-16.
A. Fujishima et al., "Electrochemical Photolysis of Water at a Semiconductor Electrode", Nature, vol. 238, pp. 37-38 (1972).
A. J. Nozik, "Electrode Materials for Photoelectrochemical Devices", J. Crystal Growth, vol. 39, pp. 200-209 (1977).
H. H. Kung et al., "Semiconducting Oxide Anodes in Photoassisted Electrolysis of Water", J. Apply. Phys., vol. 48, pp. 2463-2469 (1977).

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