Figure 3From: Supercapacitor electrode with a homogeneously Co3O4-coated multiwalled carbon nanotube for a high capacitanceSEM images of (a) pure MWCNTs, (b) pure Co3O4, (c) Co3O4-0.5/MWCNTs (low magnification), (d) Co3O4-0.5/MWCNTs (high magnification).Back to article page