The Use of Radiotracer Diffusion to Investigate Ionic Transport in Polymer Electrolytes: Examples, Effects, and Their Evaluation
The Use of Radiotracer Diffusion to Investigate Ionic Transport in Polymer Electrolytes: Examples, Effects, and Their Evaluation
复制标题
使用放射性示踪剂扩散研究聚合物电解质中的离子输运：示例、效果及其评估
DOI：
10.1524/zpch.2010.0017
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
S. Obeidi
中科院分区：
文献类型：
--
作者：
N. Stolwijk;M. Wiencierz;J. Fögeling;J. Bastek;S. Obeidi
本文介绍了应用放射性示踪扩散（RTD）技术研究盐包聚合物电解质中离子迁移所取得的一些显著结果。该技术的基础上确定一个放射性示踪剂的深度分布连续切片等温扩散退火。与其他方法不同，RTD能够测量自阳离子和自阴离子扩散系数，即使是在盐中稀释的系统。另一个独特的功能是在极低浓度水平下研究外来离子扩散的能力。结合直流电导率数据，RTD可以提供固体状聚合物电解质（SPE）中的质量和电荷传输的几乎完整的图片。本文介绍了特殊的SPE相关的程序中使用的RTD实验和分析。该方法的优点将证明与选定的例子中的原型SPE系统的自我和外来离子扩散。我们还提出了RTD处理盐沉淀和氧化物纳米颗粒作为分散填料材料的影响的突出例子。
Abstract The paper highlights some remarkable results obtained by applying the radiotracer diffusion (RTD) technique to the study of ionic transport in salt-in-polymer electrolytes. The technique is based on the determination of a radiotracer depth profile by serial sectioning following isothermal diffusion annealing. Unlike alternative methods, RTD is able to measure the self-cation and self-anion diffusivity even for systems dilute in salt. Another unique feature is the capability to investigate foreign-ion diffusion at extremely low concentration levels. Combined with DC conductivity data, RTD may provide a virtually complete picture of mass and charge transport in solid-like polymer electrolytes (SPEs). The paper describes the special SPE-related procedures used in the RTD experiments and their analysis. The advantages of the method will be demonstrated with selected examples of self- and foreign-ion diffusion in prototype SPE systems. We also present prominent examples of RTD dealing with the effects of salt precipitation and oxide nano-particles used as dispersed filler material.