期刊
JOURNAL OF POWER SOURCES
卷 229, 期 -, 页码 1-5出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2012.11.119
关键词
Redox flow battery; Temperature stability; Electrolytes; Membrane; Separator
资金
- U.S. Department of Energy's (DOE's) Office of Electricity Delivery and Energy Reliability (OE) [57558]
- DOE [DE-AC05-76RL01830]
The recently invented iron (Fe)/vanadium (V) redox flow battery (IVB) system has attracted increasing attention because of its long-term cycling stability and low-cost membrane/separator. In this paper, we describe our extensive matrix study of factors such as electrolyte composition, state of charge (SOC), and temperature that influence the stability of electrolytes in both positive and negative half-cells. During the study, an optimized electrolyte that can be operated in a temperature range from -5 degrees C to 50 degrees C without precipitation is identified. Fe/V flow cells using the optimized electrolyte and low-cost separator exhibit satisfactory cycling performance at different temperatures. Efficiencies, capacities, and energy densities of flow batteries at various temperatures are studied. (C) 2012 Elsevier B.V. All rights reserved.
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