fig12

Figure 12. Compatible electrolyte design with anode; graphite. (A) Charge/discharge cycling of NCM523||graphite full-cells (2.8-4.5 V) for EC-free electrolyte. (B) SEM-EDS images of graphite-based anodes after 100 charge/discharge cycles with EC-based (top) and EC-free electrolytes (bottom). (C) Charge/discharge cycling of NCM523||graphite full-cells (2.8-4.5 V) with the addition of 1 wt% LiDFP in EC-based electrolyte (C). (D) Precipitation experiments: the addition of an exemplary PO₃F²-based species to Ni²⁺- and Co²⁺-containing EC-based electrolyte significantly reduces the transition metal ion concentration. (E) Mechanism of the rollover fading suppression of the EC-free electrolyte. Reproduced with permission^[108]. Copyright 2021, Wiley-VCH.