期刊
ENERGY TECHNOLOGY
卷 9, 期 2, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ente.202000843
关键词
hydrogen production; photocatalytic water splitting; technoeconomy analysis; thermal water splitting; water electrolysis
This study evaluates the status of water splitting methods for hydrogen production, highlighting misconceptions in photocatalytic hydrogen production and discussing needed research directions and hurdles for large-scale production. Investment in different technologies is needed to decrease world dependence on fossil fuels.
The focus of this study is evaluating the status of the most promising methods for water splitting to H-2 and O-2 with their implementation in mind. These are thermochemical water splitting, photocatalytic (PC) and photo-electrocatalytic (PEC) water splitting, and water electrolysis. In addition to evaluating their coherence, potential, and cost, some misconceptions in the PC H-2 production from water over suspended powder catalysts are highlighted. A few needed research directions at the fundamental level together with the main hurdles to cross for large-scale production are presented and in some cases discussed. Although an increasing level of activity has taken place in the last few years for large-scale hydrogen production from water, this is still marginal (at the megawatt scale). A considerable investment in different technologies is needed for a noticeable impact on the environment to occur with an objective to decrease the world dependence on fossil fuels (the terrawatt scale).
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