A New Redox Flow Battery Using Fe/V Redox Couples in Chloride Supporting Electrolyte
A new redox flow battery using Fe2+/Fe3+ and V2+/V3+ redox couples in chloride supporting electrolyte was proposed and investigated for potential stationary energy storage applications. The Fe/V redox flow cell using mixed reactant solutions operated within a voltage window of 0.5-1.35 V with a nearly 100% utilization ratio and demonstrated stable cycling with energy efficiency around 80% at room temperature. Compared with Fe/Cr redox flow battery operating at an elevated temperature of 65 C, the necessity of external heat management is eliminated. Similar performance was also achieved using low-cost hydrocarbon-based ion exchange membranes, which allow for further cost reduction. The improved room temperature electrochemical performance makes the Fe/V redox flow battery a promising option as stationary energy storage device to enable renewable integration and stabilization of electrical grid.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1027178
- Report Number(s):
- PNNL-SA-76658; TD5018010; TRN: US201121%%345
- Journal Information:
- Energy and Environmental Science, Vol. 4, Issue 10; ISSN 1754-5692
- Country of Publication:
- United States
- Language:
- English
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