AP-XPS investigations of a commercial lithium-based electrolyte

Application Note #000403

In this note we present first AP-XPS results from a commercial liquid electrolyte for lithium ion battery production recorded at 10 mbar in the EnviroESCA. The solution is LiPF6 in EC/DMC as a common battery electrolyte. First we analyzed the LiPF6 solution in its vapor and liquid phase. In a second step we immersed V2O5, a typical cathode material, in this solution. Photoelectron spectra show significant chemical differences on the studied surfaces. This proof of principle study shows the enormous potential of the EnviroESCA for AP-XPS investigations of solid-liquid interfaces and the simplicity of the experimental setup.

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