Fig. 2. The influence of TPP on the flammability of the electrolyte and the electrochemical performance of the graphite anode.
The electrolyte was 1.0 M LiPF6 in EC/DEC (1:1, w/w). Photographs recording the burning of the electrolyte in the presence of (A) 0 wt % and (B) 40 wt % TPP. The respective times, counted from the time when the electrolyte started to burn, are indicated in each picture. Scale bars, 1 cm. (C) SET and (D) ionic conductivities of the electrolyte with different concentrations of TPP. (E) Delithiation capacity of the graphite anode during galvanostatic cycling between 0.01 and 1.5 V. The rate was 0.25 C for the first cycle and 1 C for subsequent cycles. The electrolyte was 1.0 M LiPF6 in EC/DEC (1:1, w/w) in the presence of different concentrations of TPP, which are indicated in the figure.