title: Spectroscopic studies on the cation-anion, cation-solvent and anion-solvent interactions in the LiCF3SO3/acetamide complex system.
abstract: 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.
authors.affiliation: Laboratory for Solid State Ionics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, China.
authors.forename: Yongsheng
authors.initials: Y
authors.lastname: Hu
authors.forename: Zhaoxiang
authors.initials: Z
authors.lastname: Wang
authors.forename: Hong
authors.initials: H
authors.lastname: Li
authors.forename: Xuejie
authors.initials: X
authors.lastname: Huang
authors.forename: Liquan
authors.initials: L
authors.lastname: Chen
mesh_terms: D000081:Acetamides; D000838:Anions / Q000737:chemistry / Q000378:metabolism*; D002412:Cations / Q000737:chemistry / Q000378:metabolism*; D004347:Drug Interactions; D006860:Hydrogen Bonding; D018020:Lithium Compounds / Q000737:chemistry / Q000378:metabolism*; D008698:Mesylates / Q000737:chemistry; D012997:Solvents / Q000737:chemistry / Q000378:metabolism*; D013055:Spectrophotometry, Infrared; D013059:Spectrum Analysis, Raman
chemical_list: D000081:Acetamides; D000838:Anions; D002412:Cations; D018020:Lithium Compounds; D008698:Mesylates; D012997:Solvents; C078465:methyl triflate; C030686:acetamide