聚丙烯腈
傅里叶变换红外光谱
电解质
复合数
材料科学
聚合物
锂(药物)
离子电导率
电导率
高分子化学
化学工程
介电谱
热塑性聚氨酯
电化学
化学
复合材料
物理化学
电极
弹性体
工程类
内分泌学
医学
作者
Ten-Chin Wen,H.H. Kuo,A. Gopalan
标识
DOI:10.1016/s0167-2738(02)00006-1
摘要
Investigation on new polymer electrolytes comprising of thermoplastic polyurethane (TPU) and polyacrylonitrile (PAN) and having different extent of Li+ ions has been made. Both solid and gelatinous polymer electrolytes were prepared and studied. In order to interpret the changes in morphology and conductivity of the composite, Fourier-transform infrared spectroscopy (FTIR) and AC impedance studies have been utilized. The FTIR spectral bands associated with NH and CO groups of TPU were deconvoluted and used to obtain the modifications in molecular interactions. The swelling characteristics of the composite polymer in the liquid electrolyte were studied. By analyzing the FTIR spectrum of the gelled composite, the interaction of Li+ ion with CN groups in PAN was identified. The composite polymer electrolyte has sufficient electrochemical stability to allow safe operation in rechargeable lithium polymer batteries.
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