Simple Electrochemical Preparation of Nanoflake-Like Copper Oxide on Cu-Plated Nickel Foam for Supercapacitor Electrodes With High Areal Capacitance Publisher



Malaie K¹ ; Ganjali MR^{1, 2} ; Alizadeh T³ ; Norouzi P^{1, 2}
Source: Journal of Materials Science: Materials in Electronics Published:2017

Abstract

Herein, a simple and green two-step electrochemical method was used to prepare nanoflake-like CuO\Cu microparticles on Nickel Foam (NiF) for supercapacitor applications. First, Cu microparticles were plated on NiF through a simple immersion method. Next, the Cu/NiF electrode was electrochemically oxidized in KOH solution to CuO/Cu/NiF. The effect of KOH electrolyte concentration on the electro-oxidation of Cu/NiF was also investigated. FESEM studies show that the surface morphology of CuO/Cu is highly porous, consisting of Cu interconnected microparticles on which islands of CuO have grown. The CuO/Cu/NiF electrode exhibited a high areal capacitance of 0.31 F cm−2 at a scan rate of 10 mV s−1 with excellent stability over 1000 voltammetric cycles. The results in this study show the potential application of CuO/Cu/NiF as a low-cost high-performance positive electrode in Supercapacitors. © 2017, Springer Science+Business Media, LLC.