Issue 12, 2011

A novel solid oxideredox flow battery for grid energy storage

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

Supplementary files

Article information

Article type
Communication
Submitted
28 Aug 2011
Accepted
26 Sep 2011
First published
11 Oct 2011

Energy Environ. Sci., 2011,4, 4942-4946

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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