PVA-CMC-KOH-H_2O碱性聚合物电解质研究

电化学（中英文） ›› 2006, Vol. 12 ›› Issue (1): 40-45.

PVA-CMC-KOH-H_2O碱性聚合物电解质研究

袁安保;赵俊;

上海大学理学院化学系,上海大学理学院化学系上海200444,上海200444

收稿日期:2006-02-28 修回日期:2006-02-28 出版日期:2006-02-28 发布日期:2006-02-28

Studies on PVA-CMC-KOH-H_2O Alkaline Polymer Electrolytes

YUAN An-bao~

(*),ZHAO Jun(Department of Chemistry,College of Sciences,Shanghai University,Shanghai 200444,China

Received:2006-02-28 Revised:2006-02-28 Published:2006-02-28 Online:2006-02-28

摘要/Abstract

摘要： 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1.6 V.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N i/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N i/MH电池,其低倍率放电性能较好.

关键词: 碱性聚合物电解质, PVA, CMC, 共混改性, 离子电导率

Abstract: A given amount of sodium carboxymethyl cellulose(CMC)was added to PVA complex and thus the PVA-CMC-KOH-H_(2)O alkaline polymer electrolyte with this modification was prepared.The properties of the polymer electrolyte films were characterized by AC impedance,cyclic voltammetry,differential thermal analysis and infrared spectroscopic analysis methods.The polymer electrolyte exhibited a high ionic conductivity,typically 10~(-2)S·cm~(-1) with an electrochemical stability window of about 1.6 V on stainless steel blocking electrodes.The influence of the film composition such as KOH,H_(2)O and CMC on ion conductivity was investigated.In addition,a preliminary study was carried out on the polymer electrolyte for Ni/MH battery.It was shown that the Ni/MH battery with the polymer electrolyte presented a good charge/discharge performance at lower discharge rates.

Key words: Alkaline polymer electrolyte, PVA, CMC, Modification by blend, Ion conductivity

中图分类号:

O631.3

袁安保;赵俊;. PVA-CMC-KOH-H_2O碱性聚合物电解质研究[J]. 电化学（中英文）, 2006, 12(1): 40-45.

YUAN An-bao~. Studies on PVA-CMC-KOH-H_2O Alkaline Polymer Electrolytes[J]. Journal of Electrochemistry, 2006, 12(1): 40-45.

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https://electrochem.xmu.edu.cn/CN/Y2006/V12/I1/40

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