期刊
JOURNAL OF POWER SOURCES
卷 418, 期 -, 页码 11-16出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2019.02.028
关键词
Redox flow battery; Energy storage; 4-hydroxy-TEMPO; Redox-active organic molecule; Imidazolium grafting
资金
- KIST Europe
Imidazolium-grafted nitroxyl radical is synthesized through a simple two-step reaction route, and studied as redox-active catholyte for redox flow batteries. A discharge cell voltage of 1.64 V against a Zn2+/Zn anodic couple in aqueous electrolyte has been achieved. Compared to the commercial 4-OH-TEMPO and previous work, the excellent chemical and electrochemical stability of the newly synthesized compound has been confirmed from the enhanced and steady Coulombic efficiency over charge/discharge cycling. Moreover, stable cycling efficiencies and good capacity retention over long-term cycling have been observed.
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