A New Hybrid Redox Flow Battery with Multiple Redox Couples

Journal Article · Sat May 19 00:00:00 EDT 2012 · Journal of Power Sources

DOI:https://doi.org/10.1016/j.jpowsour.2012.05.032· OSTI ID:1048611

Wang, Wei; Li, Liyu; Nie, Zimin; Chen, Baowei; Luo, Qingtao; Shao, Yuyan; Wei, Xiaoliang; Chen, Feng; Xia, Guanguang; Yang, Zhenguo

A redox flow battery using V{sup 4+}/V{sup 5+} vs. V{sup 2+}/V{sup 3+} and Fe{sup 2+}/Fe{sup 3+} vs. V{sup 2+}/V{sup 3+} 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 {approx}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 Fe{sup 2+}/Fe{sup 3+} vs. V{sup 2+}/V{sup 3+} redox couples.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1048611
• Report Number(s): PNNL-SA-84238; JPSODZ; TE1400000; TRN: US201216%%1044
• Journal Information: Journal of Power Sources, Vol. 216; ISSN 0378-7753
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
CAPACITY
ELECTROLYTES
ENERGY DENSITY
ENERGY EFFICIENCY
ENERGY STORAGE
WINDOWS