Research of explosion mechanism of lithium-ion battery

Abstract

One of the obstacles to commercialize high capacity and high power lithium-ion batteries is safety properties. The explosion of battery results from the heat and pressure accumulation by internal component reactions under abuse conditions, such as overheating, overcharge, short-circuit and so on. In this paper, the main heat sources are summarized, such as cathode and anode decomposition, electrolyte decomposition, the reaction between electrolyte and electrodes. The explosion mechanism of lithium-ion battery is analyzed under high temperature heat test, overcharge and short-circuit. The measures to improve battery safety are suggested.