A Novel Solid Oxide Redox Flow Battery for Grid Energy Storage

Author(s)

Nansheng Xu, University of South Carolina - ColumbiaFollow
Xue Li, University of South Carolina - ColumbiaFollow
Xuan Zhao, University of South Carolina - ColumbiaFollow
John B. Goodenough
Kevin Huang, University of South Carolina - ColumbiaFollow

Document Type

Article

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.

Publication Info

Published in Energy & Environmental Science, Volume 4, Issue 12, 2011, pages 4942-4946.

Rights

©Energy & Environmental Science 2011, Royal Society of Chemistry.

This article cannot be redistributed or further made available.

This article was first published by the Royal Society of Chemistry and can be found at http://dx.doi.org/10.1039/C1EE02489B

Xu, N., Li, X., Zhao, X., Goodenough, J., & Huang, K. (2011). A Novel Solid Oxide Redox Flow Battery for Grid Energy Storage. Energy & Environmental Science, 4 (12), 4942 - 4946. http://dx.doi.org/10.1039/C1EE02489B