• Title/Summary/Keyword: Secondary batteries

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Redox Pairs in Redox Flow Batteries (레독스 플로우 전지의 레독스 쌍)

  • Hwang, Byunghyun;Kim, Ketack
    • Journal of the Korean Electrochemical Society
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    • v.16 no.3
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    • pp.99-110
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    • 2013
  • Redox flow batteries are attractive energy-storage devices for renewable energy and peak-power energy control. Even though some prototypes are available already, many new materials are under development for new battery systems. In this reports, redox pairs and theirs properties are explained, by which one can understand issues with redox pairs, such as contaminations, cross-over, ionic selectivity, and solubility. Batteries that have the same redox pairs in both electrode compartments can be operated longer than those with different redox pairs due to the prevention form the cross-contamination. There are undivided redox flow batteries that have no membrane, which is another direction improving cycle life of the batteries.