fig2

Figure 2. CNT/S electrode evolution. (A) XRD patterns at pristine and different cycles of CNT/S electrode; (B) Cu LM2 auger electron spectroscopy and (C) S 2p XPS spectra of pristine and 80th cycle electrode; (D) TEM image; (E) HRTEM image; (F) SAED pattern; (G) Cross-section SEM of the CNT/S electrode after 80 cycles; and (H) Schematic diagram of CNT/S electrode evolution