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- W294730108 abstract "Photoelectrolysis is a recently-discovered technique which utilizes the photoelectric properties of certain semiconducting materials for the conversion of light energy into either electrical energy or the chemical potential energy of high-energy products, such as hydrogen. The research performed during Task I of this project has sought to address the vexing dichotomy of materials properties which appears to be the major impediment to the successful development of methods for hydrogen production by means of the solar photoelectrolysis of water. Those potentially useful photocatalytic semiconducting materials reported to date, which absorb sunlight strongly, tend to be unstable with respect to corrosion or dissolution under photoelectrolytic conditions, while those materials which have been found to be intrinsically stable also tend to be transparent, or nearly so, to most of the solar spectrum. Their efficiency of solar energy utilization is therefore disappointingly low. The need, then, is for photocatalytic materials which are both stable and highly colored. Toward this end, the research performed during Task I has been directed toward (a) developing a theoretical description of the semiconductor properties required for optimal photoelectrolysis efficiency, and (b) identifying the factors governing the selection of redox electrolytes which might be used either to stabilize the semiconductormore » electrodes or to suppress the evolution of oxygen (which could be troublesome in certain cell configurations). Because this project is particularly concerned with the eventual commercial feasibility of photoelectrolysis, preliminary consideration has been given to the possibility of utilizing the redox electrolytes present in ambient water supplies for this purpose. An effort has also been made to bring together, in a unified and self-consistent manner, those relevant results published elsewhere which have been couched in a variety of formats and sign conventions.« less" @default.
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- W294730108 date "1977-05-16" @default.
- W294730108 modified "2023-09-23" @default.
- W294730108 title "Evaluation of the commercial feasibility of hydrogen production by the solar photoelectrolysis of water. Task I interim report" @default.
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