fig6

Figure 6. Optimized bio-assembly of GO using an in situ method. (A) Preparation process of GO/BC nano-nano composites. Digital photography of wet sheets (B) and cross-sectional scanning electronic microscope (SEM) views (C, D) of freeze-dried films for 1.0-HRGO/BC. (E) Mechanical performance of HRGO/BC membranes compared with BC films. (F) Optical images of flat-wise, bent, twisted, knotted, and folded 1.0-HRGO/BC films. (G) Schematic illustration of a sandwich-structure supercapacitor based on HRGO/BC nano-nano composites and the mechanism processing of electronic ions going across the pores in HRGO sheets. The red arrows refer to the ion transport pathways. (A-G) Reproduced with permission^[38]. Copyright 2019, Elsevier.