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Issue 12, 2011
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A novel solid oxideredox flow battery for grid energy storage

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Abstract

In this work we report proof-of-concept of a novel redox flow battery consisting of a solid oxide electrochemical cell (SOEC) integrated with a redox-cycle unit. The charge/discharge characteristics were explicitly observed by operating between fuel cell and electrolysis modes of the SOEC along with “in-battery” generation and storage of H2 realized by an in situ closed-loop reversible steam-metal reaction in the redox-cycle unit. With Fe/FeO as the redox materials, the new storage battery can produce an energy capacity of 348 Wh/kg-Fe and round-trip efficiency of 91.5% over twenty stable charge/discharge cycles. This excellent performance combined with robustness, environmental friendliness and sustainability promise the new battery to be a transformational energy storage device for grid application.

Graphical abstract: A novel solid oxide redox flow battery for grid energy storage

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Supplementary files

Article information


Submitted
28 Aug 2011
Accepted
26 Sep 2011
First published
11 Oct 2011

Energy Environ. Sci., 2011,4, 4942-4946
Article type
Communication

A novel solid oxide redox flow battery for grid energy storage

N. Xu, X. Li, X. Zhao, J. B. Goodenough and K. Huang, Energy Environ. Sci., 2011, 4, 4942
DOI: 10.1039/C1EE02489B

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