Voltammetry of copper oxide micro-particles immobilised on diatomite surface

Integrated copper–nickel oxide mesoporous nanowire arrays for high energy density aqueous asymmetric supercapacitors

“…In addition, the Cu : Ni = 1 : 1 electrode demonstrates strongest redox peaks with the largest CV integrated area. The electrochemical energy storage mechanism in basic electrolytes can be attributed to a combined effect of the following redox processes: [33][34][35][36][37] Cu 2 O + 2OH À 2 2CuO + H 2 O + 2e À NiO + OH À 2 NiOOH + e À However, due to the similarity of the peak positions for CuO and NiO, one cannot distinguish the respective peaks. When the molar ratio of Cu : Ni varies, the cathodic peak in CV changes within 0.22-0.27 V and the anodic peak changes within 0.36-0.4 V; this is further indicative of the combined contribution of CuO and NiO to energy storage.…”