Fig. 3: SEM and TEM of rGO and S/rGO.

Scanning electron micrographs of the a rGO powder and b S/rGO composite. Transmission electron micrographs of the c rGO powder and d S/rGO composite. e Transmission electron microscopy (TEM)–energy-dispersive X-ray spectroscopy (EDS) elemental mapping of S and C in the S/rGO composite (blue: S; red: C).