增塑聚合物电解质电化学性能  

Electrochemical Properties of Polymeric Gel Electrolyte with GBL/EC as Plasticizers

作　　者：刘玉文[1] 张勇[1] 李小龙[2] 顾琪萍[2] 张翠芬[1] 黄玉东[1] 

机构地区：[1]哈尔滨工业大学理学院应用化学系,黑龙江哈尔滨150001 [2]广东省江门三捷电池实业有限公司研究中心,广东江门529000

出　　处：《电化学》2005年第1期96-100,共5页Journal of Electrochemistry

摘　　要：以GBL/EC复配体系为增塑剂, PVDF HFP和PMMA为聚合物基体制备胶态聚合物电解质. 研究聚合物电解质的离子传输特性和电化学稳定性. 实验表明,室温离子电导率达到 1. 2mS·cm-1, 电化学稳定窗口在 4. 5V以上. 以GBL/EC增塑聚合物电解质与表面经修饰的锂金属电极组成锂金属聚合物电池,其电极稳定性较好,充放电循环寿命得到很大的提高.Polymeric gel electrolytes (GPE) based on PMMA and PVDF-HFP were prepared using the binary mixtures of γ-butyrolactone (GBL) and ethylene carbonate (EC) as plasticizers. The ionic transport properties and electrochemical stability were studied. The room temperature conductivity reached 1.2 mS·cm^(-1), electrochemical stability window exceeded 4.5V. The interfacial stability between GPE and lithium electrode was also investigated. The lithium metal polymer battery (LMPB) prepared with the GPE showed better charge and discharge life cycle when the the lithium metal electrode was treated with 1,4-dioxane.

关 键 词：聚合物 电解质 电化学性能 锂电极 界面稳定性 电池 

分 类 号：TM911.9[电气工程—电力电子与电力传动]