SiO_2基固态聚合物电解质的制备及性能研究

Preparation and Properties of SiO_2-based Solid-state Polymer Electrolytes

本文制备出SiO_2-丁烯酯醚聚合物电解质,过乙烯基硅上的双键与丁烯酯醚上的双键发生聚合反应,利用二氧化硅的特殊结构作为基体,使聚合物形成晶区,再与锂盐混合,锂盐均匀流通分散在聚合物的各个界面的间隙中,提高聚合物电解质的电导率,20%锂盐的聚合物室温下的电导率为4.57×10^(-6)S·cm^(-1),且在一定温度下电导率随温度升高而增加。

The purpose of this paper is to study SiO_2-butenyl ester ether polymer electrolytes. The polymerization reaction is carry out by using the double bond on vinyl silicon and organic matter. Which use the special structure of silica as the basis to form crystalline structure of polymer. Then the polymer was mixed with the lithium salt,and the lithium salt is uniformly dispersed in the gap between the various interfaces of the polymer to improve the conductivity of the polymer electrolyte. It is found that the polymer at 20 percent lithium salt had a conductivity of 4. 57 × 10（-6） S·cm（-1）,and in a certain temperature range its conductivity is increasing. In the experiment,the prepared materials and the products of the reaction are characterized by infrared spectroscopy,nuclear magnetic resonance and thermogravimetric analysis.