Figure 3

Structure of the nanofibers used in the book-like TENGs.

Morphology and size distributions (inset) of 8% PHBV and 10% PVDF nanofibers with different weight ratios of GO: (a) 8% PHBV, (b) PVDF with 0% GO, (c) PVDF with 0.1% GO, (d) PVDF with 0.3% GO, (e) PVDF with 0.5% GO and (f) PVDF with 0.7% GO.