fig4

Figure 4. (A) Charge and discharge curves of the first cycles of NCM, NCM-La and NCM622-La@LLO at a current density of 20 mA g-1 (0.1 C) and (B) corresponding cycling performance at 1 C in the voltage range of 3.0-4.6 V. Charge and discharge curves of different cycles and corresponding dQ/dV curves of (C and F) NCM622, (D and G) NCM622-La and (E and H) NCM622-La@LLO.