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. 2020 Nov 16;11:5809. doi: 10.1038/s41467-020-19469-3

Fig. 1. Ion and water distributions under various potentials.

Fig. 1

ac Number densities of cation (a), anion (b), and water (c) in humid 1-methyl-1-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([Pyr13][TFSI]) as a function of distance from the electrode (z) under various potentials (ΦEDL). df The number densities of cation (d), anion (e), and water as well as Li+ (f), in salt-in-humid [Pyr13][TFSI]. The horizontal dash lines (z = 0.35 nm) in (c) and (f) represent the upper boundary of the interfacial region. The contour in (f) indicates the number density of Li+ ions, and the molar salt–water ratio is 1:1. Unit: # nm−3.