XPS investigation of the vacuum interface of an ionic liquid under triangular electrical excitation for slow transients

[摘要] We report on an XPS investigation of slow transient charge imbalance at the vacuum interface of an ionic liquid, by imposing a triangular electrical excitation to two gold electrodes having an ionic liquid in between. Intensity ratio of the two N 1s peaks of the anion and the cation undergoes a total difference of up to ∼20% as the IL is slowly electrified between −5 to +5 V.

[学科分类] 分析化学