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电化学  2006 

PVA-CMC-KOH-H_2O碱性聚合物电解质研究

, PP. 40-45

Keywords: 碱性聚合物电解质,PVA,CMC,共混改性,离子电导率

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Abstract:

由聚乙烯醇(PVA)与羧甲基纤维素钠(CMC)制备PVA-CMC-KOH-H2O碱性聚合物电解质膜,应用交流阻抗、循环伏安、差热分析和红外光谱等实验方法表征、研究其性能.结果表明,该碱性聚合物电解质的室温电导率可达到10-2S.cm-1数量级,在不锈钢惰性电极上的电化学稳定窗口约为1.6V.另外,还研究了聚合物电解质膜中KOH、H2O和CMC对体系电导率的影响以及PVA-CMC-KOH-H2O碱性聚合物电解质在Ni/MH电池中的初步应用.初步结果表明,由PVA-CMC-KOH-H2O聚合物电解质组装的Ni/MH电池,其低倍率放电性能较好.

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