fig3

Figure 3. Electrochemical performances of NCM/AC composite cathodes. (A) Schematic simulation of the charge-discharge process in NCM cathodes; (B) Charge-discharge profiles of NCM9055/AC cathode during the initial three cycles at 0.2 C; (C) Rate performance of three NCM/AC cathodes; (D) Cycling performance of NCM/AC cathodes at 0.1 C; (E) Cycling performance of NCM/AC cathodes at 0.2 C; (F) Cycling performance of NCM/AC cathodes at 0.5 C; (G) Radar chart comparison of three NCM/AC composite cathode; (H) Cycling performance of NCM9055/AC cathode at 5 C; (I) Comparison of different AC proportions; (J) Rate performance comparison of the NCM9055/AC/GN composite electrode deposited on a bare aluminum foil and a carbon-coated aluminum foil; (K) Digital photograph taken by the authors of the pouch HBS featuring an internal one-cathode and two-anodes configuration and dimensions of 15 cm × 11 cm, encapsulated in aluminum-laminated film; (L) Digital photograph taken by the authors showing the pouch HBS powering a set of light bulbs; (M) Cycling performance of the as-prepared pouch HBS at 0.5 C. NCM: Lithium nickel cobalt manganese oxide; AC: activated carbon; GN: graphene; HBS: hierarchical binder system; C: C-rate (charge/discharge rate); Al: aluminum.