Liquid Quinones for Solvent-Free Redox Flow Batteries.
basic_science · Level V
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- Record sourced from PubMed, PMID 28885728.
- Also identified by DOI 10.1002/adma.201606592.
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Abstract
Liquid benzoquinone and naphthoquinone having diethylene glycol monomethyl ether groups are designed and synthesized as redox active materials that dissolve supporting electrolytes. The Li-ion batteries based on the liquid quinones using LiBF<sub>4</sub> /PC show good performance in terms of voltage, capacity, energy efficiency, and cyclability in both static and flow modes. A battery is constructed without using intentionally added organic solvent, and its high energy density (264 W h L<sup>-1</sup> ) demonstrates the potential of solvent-free organic redox flow batteries using liquid active materials.