Thermal behavior of lithiated graphite with electrolyte in lithium-ion batteries
Thermal behavior of lithiated graphite with electrolyte in lithium-ion batteries
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DOI：
10.1149/1.2139955
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发表时间：
2006-01-01
影响因子：
3.9
通讯作者：
Chen, CH
中科院分区：
文献类型：
--
作者：
Wang, QS;Sun, JH;Chen, CH
用C80量热计研究了LixC6和LixC6在1.0M LiPF6/EC+DEC电解液中的热行为。C80结果表明，LixC6单独存在一个放热峰，这是固体电解质界面(SEI)分解的结果。在LixC6-1.0M LiPF6/EC+DEC电解液样品中检测到四个放热峰。这四个峰归因于SEI分解、Li-电解液反应以及新的SEI膜的形成、新的SEI膜的分解以及Li与PVDF/其他产物的反应。计算了LixC6和LixC6-电解液在不同荷电状态下的表观活化能，发现随着锂插层的增加，表观活化能呈下降趋势。(C)2005年电化学会。[DOI：10.1149/1.2139955]版权所有。
A C80 calorimeter was used to study the thermal behaviors of LixC6 and LixC6 in 1.0 M LiPF6/EC + DEC electrolyte. C80 results show that LixC6 alone shows one exothermic peak, which is attributed to the solid electrolyte interphase (SEI) decomposition. Four exothermic peaks were detected in LixC6-1.0 M LiPF6/EC + DEC electrolyte samples. These four peaks are attributed to SEI decomposition, Li-electrolyte reaction as well as new SEI film formation, new SEI film decomposition, and Li with PVDF/other products reactions. The apparent activation energy of LixC6 and LixC6-electrolyte at different states of charge was calculated, and it was found that with intercalated lithium increasing, the activation energy shows a decreasing trend. (c) 2005 The Electrochemical Society. [DOI: 10.1149/1.2139955] All rights reserved.