Research on the Self-destruction Mechanism of Battery Thermal Failure Based on Phloroglucinol
The thermal runaway problem of high-energy lithium-ion batteries is a key factor that limits their large-scale application.In this work,we propose the phloroglucinol as a self-destructing agent blocks the reaction between the anode and the electrolyte,avoiding the production of large amounts of reducing gases,and thus reducing the reaction heat generated by gas crosstalk,and reducing the damage of thermal runaway.The results show that the introduction of the phloroglucinol advances the thermal runaway reaction to 120℃ and eliminates the intense exotherm at 200℃,which achieves the regulation of the sequence of the thermal runaway reaction and the reduction of the enthalpy of the thermal runaway reaction,and thus improving battery safety.This work will provide a new idea for high safety battery design,which has certain guiding significance.
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