期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 163, 期 1, 页码 A5150-A5153出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.0221601jes
关键词
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资金
- LDRD office of Pacific Northwest National Laboratory (PNNL) through Transformational Materials Science Initiative (TMSI)
- U.S. Department of Energy's (DOE's) Office of Electricity Delivery and Energy Reliability (OE) [57558]
- DOE [DOE-AC05-76RL01830]
We have demonstrated a new ferri/ferrocyanide - polysulfide (Fe/S) flow battery, which employs less corrosive, relatively environmentally benign neutral alkali metal ferri/ferrocyanide and alkali metal polysulfides as the active redox couples. A cobalt nanoparticle -decorated graphite felt was used at the polysulfide side as the catalyst. Excellent electrochemical performance was successfully acquired in the Fe/S flow cells with high cell efficiencies (99% coulombic efficiency and similar to 74% energy efficiency) and good cycling stability over extended charge/discharge operations. The positive half-cell appears to be the performance - limiting side in the Fe/S flow battery determined by using a carbon cloth probe. The inexpensive redox materials and possibly cell part materials can lead to reduced capital cost, making the Fe/S flow battery a promising cost-effective energy storage technology candidate. (C) 2015 The Electrochemical Society. All rights reserved.
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