A zwitterionic SiO2 composite membrane (PFSA/Z-SiO2) is designed and fabricated for a zinc/bromine flowless battery (ZBFLB). The composite membrane exhibits low Br2 crossover and high ion conductivity. The optimized ZBFLB configuration with the PFSA/Z-SiO2 membrane showed excellent coulombic efficiency (89.4%) and stable operation for over 1800 hours at a high state of charge.
D. Han, E. K. Gikunoo and S. Shanmugam, J. Mater. Chem. A, 2022, 10, 18598 DOI: 10.1039/D2TA04745D
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