EAPSI: Electrochemical Studies of the Transformation of the Solid-Liquid Interface

该奖项侧重于研究固液界面的基本行为。固液界面是在金属电极和周围流体电解质之间的边界上形成的微观区域。这一区域的分子结构在水系统中不断得到完善，但离子液体作为一种新的、有利的电解质液体的出现需要新的测量方法。离子液体是一种室温液态盐，将在从电池到生物催化的无数应用中发挥关键作用，但在技术进步之前，对界面区域的研究是必要的。其他几个模型也被描述过，每个模型都受到了批评，并经历了随后的修订。此外，在离子液体中，水在固液界面上的作用是广泛未知的。然而，已知研究的大多数离子液体在其散装液体中含有大量的水。在电化学中，这部分水被认为是高度活跃的。本研究将系统地改变离子液体中水的浓度，并利用电化学分析水。S在固液界面的作用。这项研究将与澳大利亚墨尔本莫纳什大学离子液体电化学的先驱艾伦·m·邦德博士合作进行。传统的模型不能描述离子液体的行为，而在固液界面上揭示离子液体结构的实验是化学领域的一个新兴领域。大振幅傅立叶变换交流电伏安法是研究离子液体固液界面的一种相对较新的有力工具。与大多数技术不同，FT-ac伏安法允许从感兴趣的信号中分离不需要的背景信号。这次合作提供了一个机会，可以使用只有莫纳什大学才能使用的独特仪器，并对离子液体电解质的界面区域有了新的认识。NSF EAPSI奖是与澳大利亚科学院合作资助的。

This award focuses on studying the fundamental behavior of the solid-liquid interface. The solid-liquid interface is a microscopic region formed at the boundary between a metal electrode and the surrounding fluid electrolyte. The molecular structure of this region for aqueous systems has been continually refined, but the recent advent of ionic liquids as a new, advantageous class of electrolyte fluids requires new measurements. Ionic liquids are room temperature liquid salts that will play key roles in a myriad of applications from batteries to biocatalysis, but research on the interfacial region is necessary before technological advances can be made. Several other models have been described, and each has received criticism and undergone subsequent revision. Additionally, the effects of water at the solid-liquid interface in ionic liquids are widely unknown. Yet, the majority of ionic liquids studied are known to contain significant levels of water within their bulk liquid. In electrochemistry, this portion of water is known to be highly active. This research will systematically vary the concentration of water in ionic liquids and use electrochemistry to analyze water?s role at the solid-liquid interface. This research will be conducted in collaboration with Dr. Alan M. Bond, a pioneer in ionic liquid electrochemistry, at Monash University in Melbourne, Australia.Traditional models do not describe the behavior in ionic liquids, and experiments to uncover ionic liquid structure at the solid-liquid interface is a growing field in chemistry. One relatively new and powerful tool useful for exploring the solid-liquid interface in ionic liquids is large amplitude Fourier transform alternating current (FT-ac) voltammetry. Unlike most techniques, FT-ac voltammetry allows the separation of unwanted background signal from the signal of interest. This collaboration affords an opportunity to have access to a unique instrument, available only at Monash University, and enable new insights into this interfacial region in ionic liquid electrolytes. This NSF EAPSI award is funded in collaboration with the Australian Academy of Science.