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

该奖项的重点是研究固-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液之间的边界上形成的一个微观区域。对于水体系，这一区域的分子结构一直在不断改进，但最近离子液体作为一种新的、有利的电解液类别的出现需要新的测量方法。离子液体是一种室温液体盐，将在从电池到生物催化的众多应用中发挥关键作用，但在取得技术进步之前，有必要对界面区域进行研究。其他几种型号也被描述过，每一种都受到了批评，并进行了随后的修改。此外，离子液体中固-液界面的水的影响也是未知的。然而，已知大多数被研究的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泼的。本研究将系统地改变水在离子液体中的浓度，并利用电化学方法分析水在固液界面上的作用？S。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先驱艾伦·M·邦德博士合作进行。传统模型不能描述离子液体中的行为，揭示离子液体在固液界面上的结构的实验是化学中一个不断发展的领域。大幅值傅立叶交流伏安法是研究离子液体中固-液界面的一种相对较新、功能较强的工具。与大多数技术不同，FT-AC伏安法可以将不需要的背景信号从感兴趣的信号中分离出来。这一合作使我们有机会接触到一种独特的仪器，这种仪器只在莫纳什大学才有，并使人们能够对离子液体电解质的这个界面区域有新的见解。该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.