fig5

Figure 5. Cross-sectional SEM images of Si anodes with (A) SP; (B) SP/CNT; and (C) SP/PAM-g-CNT at the pristine state and after 50 cycles (Inset: Top-view SEM images of Si electrode surface after 50 cycles). SP: Super P; CNTs: carbon nanotubes; PAM-g-CNTs: polyacrylamide-grafted CNTs; SEM: scanning electron microscopy.