Advanced Materials
Advanced Materials
5 years ago

Liquid Quinones for Solvent-Free Redox Flow Batteries

Liquid Quinones for Solvent-Free Redox Flow Batteries
Jun-Ichi Yoshida, Toshiyuki Itoh, Toshiki Nokami, Keisuke Takenaka, Naoyuki Handa, Akihiro Shimizu
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 LiBF4/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−1) demonstrates the potential of solvent-free organic redox flow batteries using liquid active materials. Liquid benzoquinone and naphthoquinone having diethylene glycol monomethyl ether groups are designed and synthesized as redox active materials that dissolve supporting electrolytes. A battery is constructed without using intentionally added organic solvent, and its high energy density (264 W h L−1) demonstrates the potential of organic redox flow batteries using liquid active materials.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/adma.201606592

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