Studies on the thermal decomposition kinetics of LiPF6 and LiBC4O8期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Studies on the thermal decomposition kinetics of LiPF₆ and LiBC₄O₈

Authors:	Shi-You Li Pei-Hua Ma Xiao-Ling Cui Qi-Du Ren Fa-Qiang Li

Affiliation:	(1) Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810 008, China;(2) Graduate School of the Chinese Academy of Sciences, Beijing, 100 039, China

Abstract:	Thermal decomposition of LiPF₆ and LiBC₄O₈ (lithium bis(oxalate)borate, abbreviated as LiBOB) were studied using TG (thermogravimetry)-DTG (derivative thermogravimetry) method with different heating rate β of 5, 10, 20 and 40°C min⁻¹ or at different constant temperature θ _C (109·80, 118·79, 148·41, 176·86°C for LiPF₆ and 278·51, 298·13, 317·65, 336·13 for LiBOB). From the non-isothermal kinetics we calculate that $n_{LiPF_6 }$ is 1·01, n _LiBOB is 1·04, $E_{LiPF_6 }$ is 91907·61 J/mol, and E _LiBOB is 205179·88 J/mol; from the isothermal kinetics we calculate that n for both LiPF6 and LiBOB are 1, E_LiPF6 is 91907·61 J/mol, E _LiBOB is 205179·88 J/mol, $ln A_{LiPF_6 }$ is 16·89 s⁻¹, and lnA_LiBOB is 31·96 s⁻¹. The results obtained from the two ways have minor differences and can validate each other.

Keywords:	LiPF₆ LiBOB TG-DTG non-isothermal kinetics isothermal kinetics
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