fig5

Figure 5. SEM images and elemental mapping results of NCM9055/AC cathode after different cycles. (A) SEM image of NCM9055/AC cathode after 50 cycles at 5 C; (B) SEM image of NCM9055/AC cathode after 100 cycles at 5 C; (C) SEM image caught under EDS mode of NCM9055/AC cathode after 360 cycles at 5 C; (D) SEM image of NCM9055/AC cathode after 200 cycles at 5 C; (E) SEM image of NCM9055/AC cathode after 360 cycles at 5 C; (F) EDS mapping of Li, C, and O for NCM9055/AC cathode. SEM: Scanning electron microscopy; EDS: energy-dispersive X-ray spectroscopy; NCM: lithium nickel cobalt manganese oxide; AC: activated carbon; Li: lithium; C: carbon; O: oxygen; C: C-rate (charge/discharge rate).