Figure 1From: High-performance binder-free supercapacitor electrode by direct growth of cobalt-manganese composite oxide nansostructures on nickel foamSEM images and XRD patterns. SEM images of the products obtained with different masses of NH4F: (a) 0.222 g, (b) 0.444 g, (c) 0.888 g. (d,e) SEM images of the Co-Mn composite oxide nanosheets obtained with 0.444 g NH4F. (f) XRD patterns of Co-Mn composite oxide nanosheets scratched down from the nickel foam.Back to article page