标题：Preparation and study of spherical nickel hydroxide coated by cobalt oxy-hydroxide
作者：Hou, Xin-Gang ;Liu, Wen-Wu ;Li, Cai-Xia ;Wang, You-Fu
作者机构：[Hou, Xin-Gang ;Li, Cai-Xia ;Wang, You-Fu ] State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Chin 更多
会议名称：2nd International Conference on Materials Science and Engineering, ICMSE 2013
会议日期：March 8, 2013 - March 10, 2013
来源：Advanced Materials Research
摘要：Nanometer nickel hydroxide particles coated by cobalt oxy-hydroxide are preparedthrough chemical precipitation method. The properties of coated Ni(OH)2 particles is characterizedby using X-ray diffraction, scanning electron microscopy, constant current charge/discharge testand cyclic voltammetry. Studies are focused on the effects of different amounts of cobaltoxy-hydroxide on structure and electrochemical characteristics of nickel hydroxide. The resultsshow that a structure of β-Ni(OH)2 is preserved and 2.5 wt % CoOOH can form a well distributedconductive network on the surface of nickel hydroxide particles, thereby leading to higherutilization of active material; Compared to other electrodes, the electrodes with 2.5 wt % coatedCoOOH show higher specific capacity and better cycling durability, and the electrodes also hasbetter reversibility of the Ni(OH)2/NiOOH redox couple, and higher oxygen evolution potential. © (2013) Trans Tech Publications, Switzerland.