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用超微电极研究二茂铁等物质在聚电解质聚乙二醇·高氯酸锂中的伏安行为
Voltammetric Behavior of Electroactive Solutes in Polyelectrolyte Polyethyleneglycol. Lithium Percholrate by Using Ultramicroelectrode
【摘要】 用超微电极研究了聚电解质聚乙二醇·高氯酸锂(PEG·LiClO4)的电化学性能。用伏安法研究了气体、有机小分子、温度、支持电解质、聚合链长的影响。结果表明,有机小分子有增塑效应;物质的扩散速率随温度的上升而增加,随支持电解质中阳离子半径增大而增加,随聚合物链长增加而减小。用粘度和自由体积理论解释了此现象。定性地描述了电子自交换对扩散的贡献。
【Abstract】 This paper describes the properties of PEG polymer electrolyte as solvent medium for so1id-state voltammetry and results for the dependency of diffusive transport of electroac- tive solutes on organic small molecule, temperature, electrolyte and polymer chain length. The diffusion rate or the current response increases with increasing temperature and decreas- ing polymer chain length. This phenomenon is explained by free volume and viscosity theo- ry. The organic molecule exerts a greater“plasticizing” effect for polyelectroyte. The contri- bution of self electronic exchange is discussed qualitatively.
【Key words】 Ultramicroelectrode; polyelectrolyte; solid-state voltammetry;
- 【文献出处】 分析化学 ,Chinese Journal of Analytieal Chemistry , 编辑部邮箱 ,1997年04期
- 【分类号】O657.1
- 【被引频次】3
- 【下载频次】158