Hu Yongsheng, Wang Zhaoxiang, Li Hong, Huang Xuejie, Chen Liquan
Laboratory for Solid State Ionics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2005 Jan 14;61(3):403-11. doi: 10.1016/j.saa.2004.03.035.
A molten salt electrolyte composed of lithium triflate (LiCF3SO3) and acetamide (CH3CONH2) has been prepared and characterized by Raman, IR spectroscopy and ac impedance. It is found that acetamide molecule not only complexes with the Li+ cation but also interacts with the CF3SO3- anion via hydrogen bonding due to its two polar groups (C=O group and NH2 group) capable of coordinating with cations and anions, respectively. Cation-anion interaction is strengthened while cation-solvent and anion-solvent interactions are weakened with the increases of salt concentration and temperature in the LiCF3SO3/acetamide complex. The ionic conductivities of the LiCF3SO3/acetamide complex with different molar ratios depend strongly on the ionic association in the complex system.
一种由三氟甲磺酸锂（LiCF3SO3）和乙酰胺（CH3CONH2）组成的熔盐电解质已被制备出来，并通过拉曼光谱、红外光谱和交流阻抗进行了表征。研究发现，乙酰胺分子不仅与Li+阳离子络合，还因其两个分别能够与阳离子和阴离子配位的极性基团（C=O基团和NH2基团）通过氢键与CF3SO3-阴离子相互作用。在LiCF3SO3/乙酰胺络合物中，随着盐浓度和温度的升高，阳离子-阴离子相互作用增强，而阳离子-溶剂和阴离子-溶剂相互作用减弱。不同摩尔比的LiCF3SO3/乙酰胺络合物的离子电导率强烈依赖于络合体系中的离子缔合。
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