Figure 10. (A,B) Cycle stability of FEC:DEC and FEC:TFEC electrolytes with different external pressure upto 2205 kPa and SEM image of plated Li metal with different electrolytes and pressure after 50 cycles. Reproduced with permission.[56]Copyright 2019, The Electrochemical Society. (C,D,E,F) Influence of asymmetric fast charge/slow discharge and slow charge/fast discharge on cycle stability, capacity throughput over life time of cells with different current protocols, theoretical thickness of Li reservoir formed in anode by controlling depth of discharge and normalized capacity throughput with different DOD. Reproduced with permission.[120] Copyright 2021, The Electrochemical Society. (G,H) Cycle stability of LiDFOB/LiBF4 electrolytes with different temperature (20, 30, and 40 oC) and outstanding cyclability of concentrated dual salt electrolyte (1.8 M LiDFOB 0.4 M LiBF4 FEC/DEC (1:2, v/v)) under pressurized condition. Reproduced with permission.[55] Copyright 2019, The Electrochemical Society.
Table 1. Coulombic efficiencies for 80 % retention of initial capacity. Reproduced with permission.[44]Copyright 2016, Wiley-VCH