Thermo-chemical water splitting: Selection of priority reversible redox reactions by multi-attribute decision making

Yimin Deng, Raf Dewil, Lise Appels, Shuo Li, Jan Baeyens, Jan Degrève and Guirong Wang

Renewable Energy, 2021, vol. 170, issue C, 800-810

Abstract: Hydrogen is a top chemical and potential fuel. Its sustainable production from biomass or water splitting gains importance. Whereas sole thermal water splitting requires too high temperatures, thermo-chemical water splitting cycles offer a solution at moderate temperatures. Such cycles were investigated over the past decades, mostly by small-scale experiments and mainly to prove their concept without judgment of their practical, economic, environmental and cyclic performance. To facilitate the decision making and to guide future priority research, these multiple aspects can be combined in a global screening system that applies the improved Analytic Hierarchy Process (AHP) and grey relational TOPSIS, together with the use of linear and non-linear combination weighing. The assessment is quantitative and comprehensive, emphasizing the complex relationship between energy efficiency, conversion, recyclability, economy and environmental quality. The total index combines systematics and flexibility through its multi-objective and multi-level nature. The index helps users, system manufacturers, researchers and governments to select the most appropriate future schemes.

Keywords: Hydrogen; Water splitting; Redox reactions; Screening; Multi-attribute criteria; Research priorities; Solar furnace (search for similar items in EconPapers)
Date: 2021
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Citations: View citations in EconPapers (10)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:170:y:2021:i:c:p:800-810

DOI: 10.1016/j.renene.2021.02.009

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