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首页> 外文期刊>Journal of Materials Science >LINEAR AND NON-LINEAR CONDUCTIVE SPECTRA OF POLYETHYLENE OXIDE/SALT COMPLEX
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LINEAR AND NON-LINEAR CONDUCTIVE SPECTRA OF POLYETHYLENE OXIDE/SALT COMPLEX

机译：聚环氧乙烷/盐复合物的线性和非线性导电谱

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A new experimental system has been developed, which enables measurements of linear as well as non-linear complex conductivities to be made. The frequency dependence of linear to fifth-order non-linear complex conductivities at different temperatures in a polyethylene oxide/salt complex can then be measured. A characteristic conduction relaxation phenomenon was observed in the spectra, which suggested the existence of different ion-conduction mechanisms between the high- and low-frequency regions. It was also found that the ratio of linear to non-linear conductivities was closely related to the elementary process of ionic transport. Furthermore, this ratio obtained from non-linear measurements allowed an estimate of the important parameters which characterized ionic transport in ion-conducting polymers, such as the hopping distance of an ion or the size of a connected cluster of the site capable of ion hopping, without the need for any additional assumptions. Thus, it was found that in a polyethylene oxide/salt complex, the typical size of a connected cluster of the effective sites capable of ion hopping was approximately 4 nm. [References: 28]
机译：已经开发了一种新的实验系统，该系统可以测量线性和非线性复电导率。然后可以测量聚环氧乙烷/盐络合物在不同温度下线性至五阶非线性络合物电导率的频率依赖性。在光谱中观察到特征性的传导弛豫现象，这表明在高频和低频区域之间存在不同的离子传导机制。还发现线性电导率与非线性电导率之比与离子迁移的基本过程密切相关。此外，通过非线性测量获得的比率可以估算出表征离子导电聚合物中离子迁移的重要参数，例如离子的跳跃距离或能够进行离子跳跃的位点的连接簇的大小，无需任何其他假设。因此，发现在聚环氧乙烷/盐络合物中，能够进行离子跳跃的有效位点的连接簇的典型尺寸为约4nm。 [参考：28]

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