Water photolysis apparatus

Details Water photolysis apparatus Water photolysis apparatus

1977-01-19

1977-12-06

Mack, John H.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204129, 204278, 204290R, 204DIG3, 250527, 429111, C25B 900, C25B 1102, C25B 102

Patent

active

040615553

ABSTRACT:
A nickel cathode has a nickel oxide layer on its surfaces. A plurality of spaced apart grooves are in the nickel oxide layer and extend into the nickel. The cathode can be utilized in a water photolysis apparatus which also includes an N type photocatalytic semiconductor anode. Both the cathode and anode are in an aqueous basic electrolyte solution. The anode and cathode are electrically biased by a solar cell. The biasing potential of the solar cell raises the voltage potential of the cathode and lowers the Fermi level of the anode.

REFERENCES:
patent: 3925212 (1975-12-01), Tchernev
patent: 4011149 (1977-03-01), Nozik
patent: 4021323 (1977-05-01), Kilby et al.
A. Fujishima et al., "Electrochemical Photolysis of Water at a Semiconductor Electrode," Nature, vol. 238, July 1972, pp. 37-38.
H. Morisaki et al., "Photoelectrolysis of Water with TiO.sub.2 -Covered Solar-Cell Electrodes," Appl. Phys. Lett., vol. 29, pp. 338-340 (1976).

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