Preparation and electrochemical performance of cellular structure Ni(OH)2 thin film

被引:12
作者
Jiao, Wanli [1 ]
Zhang, Lei [1 ]
机构
[1] Shandong Univ Technol, Sch Mat Sci & Engn, Zibo 255049, Peoples R China
关键词
Thin films; Microporous materials; Multilayers; Chemical synthesis; Electrochemical properties; SUPERCAPACITIVE PROPERTIES; HYDROTHERMAL SYNTHESIS; NICKEL; BETA-NI(OH)(2); NANOFLAKES; MORPHOLOGY; ELECTRODE;
D O I
10.1016/j.cap.2015.11.003
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Cellular structure Nickel Hydroxide Ni(OH)(2) thin film grown on indium-tin oxide (ITO) substrate was synthesized by a two-step hydrothermal method. The crystal structure and morphology of Ni(OH)(2) thin film was investigated by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The electrochemical performance was investigated by a cyclic voltammetry (CV) method. The results indicated that the thin film consisted of plate-like beta-Ni(OH)(2) grains growing on the substrate vertically and connecting each other to form a kind of multilayer cellular structure, which formed a large number of stable three-dimension pores and facilitated electrolyte diffusion and penetration to the inside of thin film. Thus, the specific capacitance of Ni(OH)(2) thin film capacitor was 980 F/g at a low scan rate of 10 mV/s; and the better reversibility and stability indicated that the cellular structure Ni(OH)(2) thin film should be a kind of promising capacitor electrode material. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:115 / 119
页数:5
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