*3.2. XRD*

The XRD patterns of pure graphene nanoplatelets, pure LSMCO, G70L25, and G95 electrode active materials are shown in Figure 2. In the patterns of the G70L25 electrodes, we can see that the major diffraction peaks of the LSMCO are maintained as the same as those of the as-synthesized LSMCO material. It demonstrates that LSMCO was successfully anchored on the graphene sheets without a secondary reaction.
