Enhanced electrochemical performance of fluorophosphate glass as anode materials by regulating F− ions

At present, tin-based anodes need to overcome two major obstacles: poor cycle stability and low capacity performance in practical applications, which seriously hinder the use of tin-based anodes in commercial lithium-ion batteries. In this work, fluorophosphate glass was prepared by the traditional melt quenching method, the structure of the glass was optimized by adding F ⁻ ions, to improve the cycle performance and capacity performance of the tin-based glass anode. The cell using the fluorophosphate glass as a working electrode exhibited good cycling performance and retained high discharge-charge specific capacities over 270 mAh g ⁻¹ for 1000 cycles at a current density of 500 mA g ⁻¹. F ⁻ ions adding can effectively improve the electrochemical performance of tin-based glass anodes, which provides a new direction for searching for excellent tin-based anodes.