中文摘要：

采用溶液浇铸法,向PVA溶液中加入不同中和度的AA,在引发剂、交联剂的作用下,经原位聚合得到PVA-PAA共混膜;接着采用碱液活化法,制备了PVA-PAA-KOH碱性聚合物电解质膜。通过扫描电镜、X射线衍射、红外光谱等测试手段研究了聚合物共混膜的形貌与结构,同时采用交流阻抗、循环伏安法表征聚合物电解质膜电化学性能。研究表明,成功制备了均相PVA-PAA共混膜,同时PAA的合成可以提高体系的含水量以及降低PVA的结晶度。电解质膜的离子电导率最大可达3.55×10-2S/cm,PVA-AA配比为7∶3的碱性聚合物电解质膜综合性能最优,电化学稳定窗口2V以上,能够满足镍氢电池的要求。

英文摘要：

PAA was prepared by the situ polymerization of AA with various neutralization degrees in PVA solution under the action of initiator and crosslinker and PVA-PAA blended membrane was prepared by the solution casting method.PVA-PAA-KOH alkaline polymer electrolyte was activated by the alkaline solution.The morphology and structure of the polymer electrolyte were characterized by means of SEM,XRD and FT-IR.The electrochemical properties were represented by the AC impedance and the cyclic voltammetry.The results indicated that a homogeneous PVA-PAA blended membrane was successfully obtained.The increased water content of the membrane and the decreased crystallinity of the PVA owed to the presence of PAA.The maximum ionic conductivity of the electrolyte reached to 3.55×10-2 S/cm.The alkaline polymer electrolyte with 7∶3 mass ratio of PVA∶AA could achieve a good synthetical property with electrochemical stability window more than 2V and could meet the demands of MH-Ni battery.