新型聚合物固体电解质的导电性研究

Conductivity Study on the New Polymer Solid Electrolytes

采用溶液浇铸法制得以偏二氟乙烯与六氟丙烯共聚物P(VdF-HFP)为基质的聚合物固体电解质,并测定了该类电解质的电导率。讨论了锂盐浓度、增塑剂配比、纳米SiO2粉末掺入以及温度对膜的离子电导率的影响;结果表明:以P(VdF-HFP)为基质的电解质的室温电导率最高达到2.81×10-3S·cm-1。利用红外分析对聚合物固体电解质的导电性进行分析,探讨了聚合物固体电解质膜的各组分间相互作用的规律。

In the present paper, polymer solid electrolyte films based on P(VdF - HFP) were prepared and their conductivities were measured. The effect of lithium salt and plasticizer and the powder of nanometer SiO2 and temperature to conductivity was discussed. The results indicate that the highest room temperature conductivity of these polymer solid electrolytes is 2. 81 × 10-3 S · cm-1. The conductivities of the polymer solid electrolytes were investigated by Fourier transform infrared spectroscopy in which we have probed into the law of interaction of every component of the polymer solid electrolytes membrane.