Figure 4From: Hierarchical mesoporous nickel cobaltite nanoneedle/carbon cloth arrays as superior flexible electrodes for supercapacitorsRepresentative FESEM images of the well-cleaned carbon cloth and NCONAs grown on carbon cloth. (a) High-magnification SEM images of the well-cleaned carbon fiber (the inset shows the surface of carbon fiber). (b) SEM image of carbon fiber after conformal coating of NCONAs. (c,d) High-magnification SEM image of NCONAs.Back to article page