Figure 6From: High-performance binder-free supercapacitor electrode by direct growth of cobalt-manganese composite oxide nansostructures on nickel foamElectrochemical properties of the Co-Mn composite oxide nanostructures/Ni foam electrode. (a) Galvanostatic discharge-charge voltage profiles of the electrode at different current densities. (b) Specific capacitances at different current densities. (c) EIS test of the Co-Mn oxide nanosheets/Ni foam electrode. (d) Cycling performance of the Co-Mn oxide nanosheets/Ni foam electrode at a charge-discharge current density of 10 A g-1. (e,f) Morphologies of Co-Mn oxide hierarchical nanostructures before and after cycling tests, respectively.Back to article page