fig1

Figure 1. Schematic diagram for preparation of NCM/AC composite cathode and structural characterization of three NCM powders. (A) Schematic diagram for preparation of HBS cathode; (B) Raman spectra of three NCM samples; (C) XRD pattern of NCM523 powder; (D) XRD pattern of NCM811 powder; (E) XRD pattern of NCM9055 powder. NCM: Lithium nickel cobalt manganese oxide; AC: activated carbon; GN: graphene; HBS: hierarchical binder system; XRD: X-ray diffraction; a.u.: arbitrary units.