fig1
Figure 1. (A) XRD patterns of NCM622, NCM622-La and NCM622-La@LLO. (B and C) Comparison of (003) and (104) peaks for the three samples. (D-F) XPS comparison of Ni element for the three samples. (G-I) SEM morphology images of NCM622, NCM622-La and NCM622-La@LLO and (J) the corresponding energy-dispersive spectroscopy mapping results of NCM622-La@LLO. TEM images of (K and L) NCM622 and (M and N) NCM622-La@LLO.