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Issue 24, 2014
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Steam electrolysis by solid oxide electrolysis cells (SOECs) with proton-conducting oxides

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Abstract

Energy crisis and environmental problems caused by the conventional combustion of fossil fuels boost the development of renewable and sustainable energies. H2 is regarded as a clean fuel for many applications and it also serves as an energy carrier for many renewable energy sources, such as solar and wind power. Among all the technologies for H2 production, steam electrolysis by solid oxide electrolysis cells (SOECs) has attracted much attention due to its high efficiency and low environmental impact, provided that the needed electrical power is generated from renewable sources. However, the deployment of SOECs based on conventional oxygen-ion conductors is limited by several issues, such as high operating temperature, hydrogen purification from water, and electrode stability. To avoid these problems, proton-conducting oxides are proposed as electrolyte materials for SOECs. This review paper provides a broad overview of the research progresses made for proton-conducting SOECs, summarizing the past work and finding the problems for the development of proton-conducting SOECs, as well as pointing out potential development directions.

Graphical abstract: Steam electrolysis by solid oxide electrolysis cells (SOECs) with proton-conducting oxides

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Article information


Submitted
08 Jun 2014
First published
18 Aug 2014

Chem. Soc. Rev., 2014,43, 8255-8270
Article type
Review Article

Steam electrolysis by solid oxide electrolysis cells (SOECs) with proton-conducting oxides

L. Bi, S. Boulfrad and E. Traversa, Chem. Soc. Rev., 2014, 43, 8255
DOI: 10.1039/C4CS00194J

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