Abstract
Ionic liquids (ILs) have gained practical and fundamental interests as replacements of conventional electrolytes in modern electrochemical devices (e.g., advanced batteries, fuel cells, super-capacitors, sensors, and electrochromic displays). All electrochemical applications require fundamental understanding of the interface reactions, interface structure, and properties which can be obtained through in situ characterization of the dynamic interface processes. In this chapter, we discuss fundamentals of the IL–electrode interface and the in situ characterization techniques including electrochemical impedance spectroscopy (EIS), electrochemical quartz crystal microbalance (EQCM), and in situ infrared spectroscopy (IR) for studying IL–electrode interface. Finally, we summarize recent developments and applications of task-specific ILs and their surface immobilization on solid supports as a replacement of conventional recognition elements and electrolytic media in many different sensor developments.
Published Version
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