通过溶液浇铸和碱液活化的简易方法制备了聚乙烯醇(PVA)/聚丙烯酸钾(PAAK)碱性聚合物电解质.运用交流阻抗法、循环伏安(CV)和X射线衍射(XRD)等技术对碱性聚合物电解质进行表征,分析了PAAK对聚合物电解质离子电导率的影响.结果表明,PAAK对聚合物电解质导电性的作用主要表现在:一是使聚合物电解质中容纳更多的KOH溶液；二是能降低PVA的结晶度,从而提高聚合物电解质的离子电导率.所制备的PVA/PAAK碱性聚合物电解质最大室温电导率达3.074×10-2 S/cm,电化学稳定窗口为2.2V.以其实验室制备的镁基储氢合金为负极,组装的聚合物镍氢电池(MH-Ni电池)的循环寿命较传统的MH-Ni电池明显改善.
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