Measuring Salt Activity Coefficients in Lithium-Battery Electrolytes

摘要

Electrolyte salt activity coefficients are essential for accurate electrochemical cell models; however, values for lithium salt activity coefficients are scarce in the literature. Stewart and Newman employ concentration-cell experiments to determine the salt activity coefficient for solutions of LiPF6 in propylene carbonate and in a 1:1 by weight solution of ethylene carbonate (EC) and ethyl methyl carbonate.