Facile Chemical Growth of Cu(OH) 2 Thin Film Electrodes for High Performance Supercapacitors

본 연구에서는 간단한 화학적 합성 방법을 통하여 스테인레스 기판 nano-bud 형성하였다 . 그리고 또 다른 합성 방법인 chemical bath deposition 을 A facile soft chemical synthesis route is used to grow nano-buds of copper hydroxide [Cu(OH) 2 ] thin films on stainless steel substrate[SS]. Besides different chemical methods for synthesis of Cu(OH) 2 nanostructure, the chemical bath deposition (CBD) is attractive for its simplicity and environment friendly condition. The structural, morphological, and electro-chemical properties of Cu(OH) 2 thin films are studied by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM), cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) measurement techniques. The results showed that, facile chemical synthesis route allows to form the polycrystalline, granular nano-buds of Cu(OH) 2 thin films. The electrochemical properties of Cu(OH) 2 thin films are studied in an aqueous 1 M KOH electrolyte using cyclic voltammetry. The sample exhibited supercapacitive behavior with 340 F g -1 specific capacitance. Moreover, electrochemical capacitive measurements of Cu(OH) 2 /SS electrode exhibit a high specific energy and power density about ~83 Wh kg -1 and ~3.1 kW kg -1 , respectively, at 1 mA cm -2 current density. The superior electrochemical properties of copper hydroxide (Cu(OH) 2 /SS) electrode with nano-buds like structure mutually improves pseudocapacitive performance. This work evokes scalable chemical synthesis with the enhanced supercapacitive performance of Cu(OH) 2 /SS electrode in energy storage devices.