Characterization of Interfaces in Electrochemical Devices

本研究项目由分析和表面化学计划资助，研究电化学装置中的界面化学问题。亚利桑那大学的Pemberton教授和她的研究小组结合使用表面振动光谱、电化学方法和电子光谱探针，研究了三种重要电化学界面的结构和性质。本文研究了碳酸二酯溶剂在模型锂电池电极表面的取向，电化学电容器系统中使用的二烷基咪唑盐的界面化学性质，以及有机薄膜与低功功能金属的相互作用。研究了有关界面结构和反应性的基本问题，并着眼于这些信息的技术应用。了解重要电化学系统中的界面化学是本研究项目的目标。实验探针的组合用于解决电极界面的电解质结构问题，电容系统中有机电介质的界面相互作用，以及有机发光器件中重要的界面化学。这项基础研究的结果影响了许多重要的微电子技术。

This research project, supported in the Analytical and Surface Chemistry Program, addresses questions of interfacial chemistry in electrochemical devices. Using a combination of surface vibrational spectroscopies, electrochemical methods, and electron spectroscopic probes, Professor Pemberton and her research group at the University of Arizona study the structure and properties of three types of important electrochemical interfaces. The orientation of diakylcarbonate solvents at model Li battery electrode surfaces, the interfacial chemistry of dialkylimidazolium salts used in electrochemical capacitor systems, and the interaction of organic thin films with low work function metals are examined in this work. Fundamental questions about interfacial structure and reactivity are studied, with an eye towards the technological applications of this information.The understanding of the interfacial chemistry in important electrochemical systems is the goal of this research project. A combination of experimental probes are used to address questions of electrolyte structure at the electrode interface, the interfacial interactions of organic dielectrics in capacitor systems, and the interfacial chemistry important in organic light emitting devices. Results of this fundamental research impact a number of important microelectronic technologies.