Figure 4From: Supercapacitor electrode with a homogeneously Co3O4-coated multiwalled carbon nanotube for a high capacitanceCV curves. CV curves of (a) pure MWCNT electrode at different sweep rate, (b) Co3O4/MWCNT electrode with different Co3O4 contents at a sweep rate of 50 mVs−1. Co3O4, cobalt oxide; MWCNT, multiwalled carbon nanotube.Back to article page