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It remains controversial over whether preferential solvation occurs when lithium salts are dissolved in typical binary electrolytes. While the role of Liþ-solvation sheath in directing interphasial chemistry on graphitic anode surface has become recognized, it is imperative to understand the quantitative structure of such sheaths. Employing a soft ionization mass spectrum technique, statistic distribution of cyclic and acyclic carbonate molecules within the Liþ-solvation sheath was successfully established. The quantita-tive mapping of sheath structure against bulk electrolyte composition reveals unambiguous preference of cyclic over acyclic car-bonate molecules by Liþ.
Cresce et al. (Sat,) studied this question.