Phase Behavior and Solvation of Lithium Trifluoromethanesulfonate in Propylene Carbonate
Phase Behavior and Solvation of Lithium Trifluoromethanesulfonate in Propylene Carbonate
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三氟甲磺酸锂在碳酸丙烯酯中的相行为和溶剂化
DOI：
10.1149/04529.0041ecst
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
P. Trulove
中科院分区：
文献类型：
--
作者：
M. Foley;Christopher Worosz;Kurt D. Sweely;W. Henderson;H. Long;P. Trulove
本文给出了描述三氟甲磺酸锂（LiCF 3SO 3）在碳酸丙烯酯（PC）中的相行为和溶剂化的数据。从差示扫描量热法（DSC）和样品混合物的拉曼光谱获得的数据相关，以提高对溶剂-盐协会的理解。相图将显示溶剂-盐相互作用的行为。从DSC分析获得的热数据构建的二元相图表明，只有玻璃化转变温度的所有混合物的PC-LiCF 3SO 3测试。应用拉曼光谱来探测液体电解质并发现溶液中的溶剂-盐缔合。结果表明，PC-LiCF 3SO 3的混合物不容易形成溶剂分离的离子对，而是倾向于接触离子对和更聚集的溶剂化物。总体而言，本研究提供了对这些模型电池电解质物质的电解质溶剂化的一些见解。
Presented here are data describing the phase behavior and solvation of lithium trifluoromethanesulfonate (LiCF3SO3) in propylene carbonate (PC). Data obtained from differential scanning calorimetry (DSC) and Raman spectroscopy of sample mixtures are correlated to enhance understanding of solvent-salt associations. A phase diagram will display the behavior of the solvent-salt interactions. The binary phase diagram constructed from thermal data acquired by DSC analyses indicated only glass transition temperatures for all mixtures of PC-LiCF3SO3 tested. Raman spectroscopy is applied to probe the liquid electrolyte and discover solvent-salt associations in solution. Results indicate that mixtures of PC-LiCF3SO3 do not readily form solvent-separated ion pairs but rather tend toward contact ion pair and more aggregated solvates. Overall, this study provided some insight into electrolyte solvation of these model battery electrolyte species.