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. 2019 Jan 14;10:188. doi: 10.1038/s41467-018-07975-4

Fig. 1.

Fig. 1

Electrochemical performances of the lithium–sulfur cells with varying anions. a Charge and discharge curves of the first 0.2 C cycle, b comparison of the charge (closed circle) and discharge (open circle) capacities, and c Coulombic efficiency data for 80 charge/discharge cycles at 0.2 C. The electrolytes consist of 0.2 M lithium polysulfide (LiPS, Li2S8 based) with 1 M Li salts LiX, X = bistriflimide (TFSI), triflate (Tf), or bromide (Br) / 0.2 M lithium nitrate (LiNO3) / 1,3-dioxolane (DOL):1,2-dimethoxyethane (DME) (1:1)