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Liquid Quinones for Solvent‐Free Redox Flow Batteries
Author(s) -
Shimizu Akihiro,
Takenaka Keisuke,
Handa Naoyuki,
Nokami Toshiki,
Itoh Toshiyuki,
Yoshida JunIchi
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201606592
Subject(s) - redox , materials science , electrolyte , solvent , ionic liquid , chemical engineering , ether , flow battery , inorganic chemistry , organic chemistry , chemistry , electrode , catalysis , engineering
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 4 /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.