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. Author manuscript; available in PMC: 2021 Jun 30.
Published in final edited form as: ACS Energy Lett. 2020 Dec 22;6(1):224–231. doi: 10.1021/acsenergylett.0c02461

Figure 3.

Figure 3.

(a) Discharge behavior of Li-S cells with electrolyte containing 1 M LiTFSI and 0.2 M LiNO3 in DOL/DME, or 0.8 M LiTFSI and 0.2 M LiNO3 with the addition of either 0.2 M LiTFA or 0.2 M CH3TFA. (b) The evolution each cell’s voltage polarization, or the difference between the average charge and discharge voltages, plotted over the course of 50 cycles. (c) A magnified view of the discharge behavior of each cell, with the bifunctional improvements presented through the CH3TFA additive deconvoluted. (d) A comparison of the improvements to rate capability brought about by the addition of CH3TFA to the control electrolyte.