Fig. 7. Nyquist plots from the EIS measurements for the LiFePO4/C composites.Figure optionsDownload full-size imageDownload as PowerPoint slide
3.5. Electrochemical performance of 18650 batteries
The 18650 batteries were prepared with LFP-1 (with pomegranate-like spherical structures) as cathode, to verify the electrochemical performances of LFP-1 and that GDC-0032 of full batteries. The electrochemical performance in the temperature range of −40 to 25 °C as well as the cycling performances at 25 and −20 °C were tested, the results are Euglenoids shown in Fig.