A redox flow battery using V4+/V5+ vs. V2+/V3+ and Fe2+/Fe3+ vs. V2+/V3+ redox couples in chloric/sulphuric mixed acid supporting electrolyte was investigated for potential stationary energy storage applications. The Fe/V hybrid redox flow cell using mixed reactant solutions operated within a voltage window of 0.5~1.7 V demonstrated stable cycling over 100 cycles with energy efficiency ~80% and no capacity fading at room temperature. A 66% improvement in the energy density of the Fe/V hybrid cell was achieved compared with the previous reported Fe/V cell using only Fe2+/Fe3+ vs. V2+/V3+ redox couples.
Revised: August 13, 2012 |
Published: May 19, 2012
Citation
Wang W., L. Li, Z. Nie, B. Chen, Q. Luo, Y. Shao, and X. Wei, et al. 2012.A New Hybrid Redox Flow Battery with Multiple Redox Couples.Journal of Power Sources 216.PNNL-SA-84238.doi:10.1016/j.jpowsour.2012.05.032