An experimental and modeling study of sodium-ion battery electrolytes
نویسندگان
چکیده
Electrolytes play an integral role in the successful operation of any battery chemistry. The reemergence sodium-ion (SIB) chemistry has therefore rejuvenated search for optimized SIB salts and solvents. Recent experiments have found that 1 M NaPF 6 ethylene carbonate (EC) propylene (PC), EC 0.5 : PC (w/w) is best binary electrolyte SIBs. However, mathematical models, to elucidate these experimental findings, so far been lacking. Furthermore, no attempts understand effect composition on conductivity stability performed. Herein, viscosity profiles are unraveled, using modeling approaches at different temperatures salt concentrations. measured a double-wall Couette cell first time, ionic determined two Pt blocking electrodes PAT-Cell electrochemical setup. Modeling performed Advanced Electrolyte Model (AEM), statistical mechanics software. It shown relationship follows simple Stokes' law even low high In addition, ternary electrolytes hard carbon correlate with preferential ion solvation EC. • PC. Conductivity results over wide concentration temperature range. accurately predicts results. -based higher compared LiPF electrolytes. cationic correlates electrode stability.
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ژورنال
عنوان ژورنال: Journal of Power Sources
سال: 2021
ISSN: ['1873-2755', '0378-7753']
DOI: https://doi.org/10.1016/j.jpowsour.2021.230658