The electrical double layer at ionic liquid (IL)–Au(111) interfaces is composed of alternating ion layers. Interfacial layering is markedly weaker when small amounts of LiCl are dissolved in the IL for all potential between −2.0 V and +2.0 V (vs. Pt). This means that models developed for pure IL electrical double layers may not be valid when solutes are present.
Chemical Communications Vol. 48, Issue 82, p. 10246-10248