Understanding interactions between electrolyte and electrode materials is important for improving the robustness and processability of next generation energy storage technologies. We utilize sum-frequency generation to probe the interface of propylene carbonate-based lithium ion electrolytes at a charged amorphous silicon interface. In particular, we follow how the orintation of interfacial propylene carbonate changes at as a function of surface charge and Li ion concentration. The cell used will be described, as it allows for quantitative control and measurement of electrochemical processes using impedance spectroscopy. The general cell design is readily applicable not only to energy storage systems, but also to corrosion, geochemical and biological interfaces.

Sum frequency generation of Li-ion battery solvents and electrolyte on amorphous silicon

2019 Spring National Meeting

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