fig2

Figure 2. SEM images of Li₇P₃S₁₁ pellets prepared by (A) THF, (B) ACN and (C) THF + ACN, and the matching impedance figures at RT. The equivalent circuit is inserted in the impedance spectrum. Reproduced with permission^[19] (Copyright 2016, Elsevier). SEM: Scanning electron microscopy; THF: tetrahydrofuran; ACN: acetonitrile; RT: room temperature.