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Hydrogen production by photoelectrolytic decomposition of H2O using solar energyPhotoelectrochemical systems for the efficient decomposition of water are discussed. Semiconducting d band oxides which would yield the combination of stability, low electron affinity, and moderate band gap essential for an efficient photoanode are sought. The materials PdO and Fe-xRhxO3 appear most likely. Oxygen evolution yields may also be improved by mediation of high energy oxidizing agents, such as CO3(-). Examination of several p type semiconductors as photocathodes revealed remarkable stability for p-GaAs, and also indicated p-CdTe as a stable H2 photoelectrode. Several potentially economical schemes for photoelectrochemical decomposition of water were examined, including photoelectrochemical diodes and two stage, four photon processes.
Document ID
19800024346
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Rauh, R. D. (EIC, Inc. Newton, MA, United States)
Alkaitis, S. A. (EIC, Inc. Newton, MA, United States)
Buzby, J. M. (EIC, Inc. Newton, MA, United States)
Schiff, R. (EIC, Inc. Newton, MA, United States)
Date Acquired
September 4, 2013
Publication Date
August 1, 1980
Subject Category
Energy Production And Conversion
Report/Patent Number
JPL-9950-406
NASA-CR-163586
Accession Number
80N32854
Funding Number(s)
CONTRACT_GRANT: JPL-955271
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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