| PVA-CMC-KOH-H2O碱性聚合物电解质研究 |
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| 引用本文： | 袁安保,赵俊. PVA-CMC-KOH-H2O碱性聚合物电解质研究[J]. 电化学, 2006, 12(1): 40-45 |
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| 作者姓名： | 袁安保 赵俊 |
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| 作者单位： | 上海大学理学院化学系,上海,200444;上海大学理学院化学系,上海,200444 |
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| 基金项目： | 上海市教委发展基金(02AK50)资助 |
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| 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.
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| 关 键 词： | 碱性聚合物电解质 PVA CMC 共混改性 离子电导率 |
| 文章编号： | 1006-3471（2006）01-0040-005 |
| 收稿时间： | 2005-07-20 |
| 修稿时间： | 2005-08-30 |
Studies on PVA-CMC-KOH-H2O Alkaline Polymer Electrolytes |
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| YUAN Anbao,ZHAO Jun. Studies on PVA-CMC-KOH-H2O Alkaline Polymer Electrolytes[J]. Electrochemistry, 2006, 12(1): 40-45 |
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| Authors: | YUAN Anbao ZHAO Jun |
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| 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. |
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| Keywords: | Alkaline polymer electrolyte PVA CMC Modification by blend Ion conductivity |
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