Suppression of Electrochemical Decomposition of Electrolyte in Lithium Ion Batteries Using Electrolyte Containing Succinimide Group Compounds

Abstract

A liquid organic electrolyte system for lithium ion batteries with graphite anode containing succinimide group compounds as electrolyte additives has been studied. The decomposition of electrolyte on the graphite electrode could be remarkably suppressed by the addition of succinimides. In particular, N-Benzyloxycarboxylsuccinimide(BCSC) could improve electrochemical performance of lithium-ion battery. The correlation between the lowest unoccupied molecular orbital (LUMO) energy and the reduction potential of the additives is roughly linear.