Recent Advances in Synthesis of Vinylene Carbonate
As an important lithium electrolyte additive,vinylene carbonate(VC)can improve the high and low temperature performance of the battery,reduce the internal resistance of the battery,and improve the cycle performance of the battery.Its synthesis process has always been the focus of attention for many scholars.Therefore,this review will focus on the synthesis routes and processes of VC,including the traditional two-steps synthesis route,which ethylene carbonate(EC)generates chloroethylene carbonate(CEC)through chlorine substitution reaction,and then dechlorinates with triethylamine to obtain VC,as well as the route of synthesizing VC through direct one-step dehydrogenation of EC.This review summarizes the current synthesis processes of VC,categorizes and discusses the characteristics of different methods,and looks forward to future development trends.Currently,despite environmental and safety issues,the traditional two-step route is still the industrial synthesis of VC,and the one-step synthesis route still requires in-depth research on the development of catalysts,reaction processes,and mechanisms.
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