Fig. 6. The mechanism analysis of electrolytes. HRTEM images of NVP in (a) 1 M NaPF₆ + DME, (b) 1 M NaPF₆ + DME/VC and (c) 1 M NaPF₆ + DME/VC + 2 wt% GA electrolytes. HRTEM images of HC in (d) 1 M NaPF₆ + DME, (e) 1 M NaPF₆ + DME/VC and (f) 1 M NaPF₆ + DME/VC + 2 wt% GA electrolytes. (g) The illustration of film formation on the cathode and anode in 1 M NaPF₆ + DME/VC + 2 wt% GA electrolyte.