Chang, Zhenjun Henkensmeier, Dirk Chen, Ruiyong 2024-01-19T20:30:54Z 2024-01-19T20:30:54Z 2021-09-02 2019-04 0378-7753 https://pubs.kist.re.kr/handle/201004/120151 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. English ELSEVIER SCIENCE BV Shifting redox potential of nitroxyl radical by introducing an imidazolium substituent and its use in aqueous flow batteries Article 10.1016/j.jpowsour.2019.02.028 1 JOURNAL OF POWER SOURCES, v.418, pp.11 - 16 JOURNAL OF POWER SOURCES 418 11 16 N scie scopus 000462420500002 2-s2.0-85061427552 Chemistry, Physical Electrochemistry Energy & Fuels Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Materials Science Article IONIC LIQUID HIGH-CAPACITY HIGH-VOLTAGE ELECTROLYTES EFFICIENT DENSITY SURFACE POINT PH Redox flow battery Energy storage 4-hydroxy-TEMPO Redox-active organic molecule Imidazolium grafting