期刊
CHEMSUSCHEM
卷 16, 期 8, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.202201993
关键词
electrolytes; electrosynthesis; ionic grafting; redox flow batteries; solubility
This study investigates the development of sustainable design strategies for aqueous electrolytes in redox flow batteries using redox-active organic materials. A green spontaneous grafting reaction is observed between a redox-active organic radical and an electrochemically activated structural modifier at room temperature through a simple mixing step. Furthermore, a physical mixing method is utilized to formulate a structured aqueous electrolyte and enables aqueous solubilization of the organic solute beyond the conventional dissolution limit, leading to a record high discharge cell voltage in aqueous non-hybrid flow cell.
This study concerns the development of sustainable design strategies of aqueous electrolytes for redox flow batteries using redox-active organic materials. A green spontaneous grafting reaction occurs between a redox-active organic radical and an electrochemically activated structural modifier at room temperature through a simple mixing step. Then, a physical mixing method is used to formulate a structured aqueous electrolyte and enables aqueous solubilization of the organic solute from below 0.5 to 1.5 m beyond the conventional dissolution limit. The as-obtained concentrated mixture can be readily used as catholyte for a redox flow battery. A record high discharge cell voltage (1.6 V onset output voltage) in aqueous non-hybrid flow cell is attained by using the studied electrolytes.
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