The optimization of the electrolyte for low temperature LiFePO4-graphite battery
Fig. 2 d shows the capability profile of LiFePO 4 -graphite battery with electrolyte 4 from 25 °C to −30 °C. The capacity retention rates are 74.3, 58.5, 42.8, and 30.8 % at low temperature of 0 °C, −10 °C, −20 °C, and −30 °C, respectively. Moreover, the LiFePO 4 -graphite battery with electrolyte 4 demonstrates an excellent