Semi-conducting electrodes for photoelectrolysis of water. Final report
The study concerns the use of photoelectrolysis as a future source of energy and focuses on the problem of the performance of the photoanode. Problems arise due to the low corrosion resistance, higher band gap, low energy conversion efficiency, and the requirement of a bias potential. During the course of the investigation, all of these problems in the performance of electronic ceramic photoanodes have been addressed. Photoanodes have been developed with the following properties: (1) TiO2-NbO2 solid solution (an energy conversion efficiency of 6.8%, with a quantum efficiency of 22%), (2) excellent corrosion resistance in alkaline solutions, (3) a fabrication technology has been developed for the photoanodes, and (4) the photoanodes can generate hydrogen without any external bias. The investigation also showed that the band gap of a TiO2-NbO2 solid solution decreased as the amount of NbO2 increased.
- Research Organization:
- Ceramatec, Inc., Salt Lake City, UT (United States)
- OSTI ID:
- 5909628
- Report Number(s):
- PB-92-113901/XAB; CERMATEC--8960501; CNN: NSF-ISI85-05637
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
080101* -- Hydrogen-- Production-- Electrolysis
080106 -- Hydrogen-- Production-- Biosynthesis & Photochemical Processes
36 MATERIALS SCIENCE
360600 -- Other Materials
ANODES
CHALCOGENIDES
CHEMICAL PREPARATION
CONVERSION
CORROSION RESISTANCE
DISPERSIONS
EFFICIENCY
ELECTRODES
ELECTROLYSIS
ENERGY CONVERSION
ENERGY EFFICIENCY
GAS GENERATORS
HYDROGEN COMPOUNDS
HYDROGEN GENERATORS
HYDROGEN PRODUCTION
LYSIS
MATERIALS
MIXTURES
NIOBIUM COMPOUNDS
NIOBIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
PHOTOANODES
PHOTOELECTROLYSIS
REFRACTORY METAL COMPOUNDS
SEMICONDUCTOR MATERIALS
SOLID SOLUTIONS
SOLUTIONS
SYNTHESIS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
WATER