Effect of Silver Vanadate Additions on the Electrochemical Characteristics of the Fluorocarbon Electrode

All-Temperature, High-Energy-Density Li/CFx Batteries Enabled by a Fluorinated Ether as a Cosolvent

“…Lithium/fluorinated carbon (Li/CF x ) batteries, widely used in electronic equipment, medical instruments and military fields, have attracted wide attention due to their high theoretical energy density of 2180 Wh kg –1 , much higher than those of Li/MnO 2 batteries (1005 Wh kg –1 ) and Li/SOCl 2 batteries (1470 Wh kg –1 ). − In addition, Li/CF x batteries also have the advantages of low self-discharge, wide operating temperature range, and excellent safety performance. − However, the relatively low electrical conductivity of CF x , introduced by excessive F atoms, results in low kinetics of cell reactions and thus impedes the balance between power density and energy density. , Massive strategies including the majorization of the F/C ratio and morphology of the CF x cathode were adopted to improve the electrical conductivity of CF x . − Another effective approach is to regulate the electrolyte. It is well known that an ideal electrolyte should have excellent ionic conductivity, low viscosity, high boiling point, low freezing point, good electrochemical stability, and safety. − The electrolyte with the above characteristics is beneficial to broadening the operating temperature range and improving the power density and energy density of batteries. − …”