Journal
RENEWABLE ENERGY
Volume 41, Issue -, Pages 1-12Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2011.11.023
Keywords
Solar hydrogen production; Solar chemical reactor; Redox working materials; Water-splitting; Thermochemical cycle
Funding
- National Natural Science Foundation of China [51076171]
- Natural Science Foundation of CQ CSTC [2010886062]
- Fundamental Research Funds for the Central Universities [CDJXS 10141147]
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Solar hydrogen production via two-step water-splitting thermochemical cycle is an appealing and completely sustainable green process. This paper attempts to present a review on this area with aspect to redox working materials, reactor design technology, general evaluation etc. Numerous types of solar chemical reactors have been designed and/or demonstrated for several decades. A great number of redox pairs have been considered, among which ZnO/Zn and iron-based oxide (Fe1-xMx)(3)O-4/(Fe1-xMx)(1-y)O (M = Ni, Mn, Co, Mg, etc.) are the most promising redox working materials that have been extensively investigated. New redox pairs, such as SnO2/SnO, CeO2/Ce2O3, GeO2/GeO, MgO/Mg etc., have also been proposed in recent years due to their distinct and potential features. A summary of different redox working materials used in solar hydrogen production via two-step water-splitting thermochemical cycles existing in the world is presented in a tabular form. Also, we give a rational assessment on solar hydrogen production via two-step water-splitting thermochemical cycles with regard to the advantages, limitations and estimated economic performance. (C) 2011 Elsevier Ltd. All rights reserved.
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