Abstract
The thermal behaviors of four organic solvents with/without LiPF6 were measured by C80 microcalorimeter at a 0.2°C min−1 heating rate. With the addition of 1 M LiPF6, the ethylene carbonate (EC) and propylene carbonate (PC) show the exothermic peaks at elevated temperature, which lessen their stabilities. The exothermic peak temperatures of EC and PC based LiPF6 solutions are at 212 and 223°C, respectively, in argon filled vessel. However, two endothermic peak temperatures were detected in diethyl carbonate (DEC) based LiPF6 solution at 182 and 252.5°C, respectively, in argon filled vessel. Dimethyl carbonate (DMC) based LiPF6 solution shows two endothermic peak temperatures at 68.5 and 187°C in argon filled vessel at elevated temperature. Consequently, it is concluded that LiPF6 play a key role in the thermal behavior of its organic solution.
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Wang, Q.S., Sun, J.H., Chu, G.Q. et al. Effect of LiPF6 on the thermal behaviors of four organic solvents for lithium ion batteries. J Therm Anal Calorim 89, 245–250 (2007). https://doi.org/10.1007/s10973-006-7534-1
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DOI: https://doi.org/10.1007/s10973-006-7534-1