摘要
通过倒相法制备固液比分别为25%、20%、17%的热塑性聚氨酯(TPU)基聚合物胶膜(GPE1、GPE2、GPE3),将其在电解液中浸泡0.5 h得到活化后的聚合物电解质,并采用微观形貌分析、力学和电化学等测试方法对其理化性能进行了表征。吸液率测试结果显示,GPE2的吸液率可达到331%,高于GPE1(318%)和GPE3(300%);SEM显示,聚合物胶膜的表面和内部都存在着均匀且密集分布的微孔结构;力学性能结果显示,未浸泡电解液的GPE1、GPE2和GPE3拉伸强度分别为5.45 MPa、3.09 MPa、4.24 MPa,吸液后对应胶膜拉伸强度分别为2.20 MPa、1.43 MPa和1.15 MPa;交流阻抗谱(EIS)和循环伏安电流法(LSV)测试结果表明,GPE2离子电导率和电化学稳定窗口分别为8.67×10^(-3)S/cm和5.62 V,均优于GPE1和GPE2。
Polymer membranes （GPE1, GPE2, GPE3 ） with different solid/liquid ratios （25%, 20%, 17% ） based on thermoplastic polyurethane were made through phase inversion method, and they were soaked in electrolyte for 0. 5 h to obtain activated polymer electrolyte, of which physical and chemical properties were characterized by scanning electron microscopy, mechanical and electrochemical tests. Absorbency test results show that GPE2 has the best absorption rate of 331% better than GPE2 （318% ） and GPE3 （300%）. Scanning electron microscopy （SEM） results show that there are homogeneous and dense microspores in the surface and interior of polymer electrolyte membrane. Mechanical properties results show that GPE1, GPE2 and GPE3 before soaking the electrolyte have tensile strength of 5.45, 3.09 and 4. 24 MPa respectively, while after soaking in the electrolyte, their tensile strengths are 2. 20, 1.43 and 1.15 MPa, respectively. The ionic conductivity of GPE2 is 8.67×10^-3 S/cm and electrochemical stability of window is 5.62 V by electrochemical impedance spectroscopy （EIS） and linear scanning vohammetry （LSV）.
出处
《塑料工业》
CAS
CSCD
北大核心
2016年第8期133-137,共5页
China Plastics Industry
关键词
热塑性聚氨酯
多孔结构
电化学稳定窗口
离子电导率
倒相法
Thermoplastic Polyurethane
Porous Structure
Electrochemical Stability of Windows
Ionic Conductivity
Phase Inversion Method
