Electrochemical performance of nickel hydroxide doped with multi-wall carbon nanotubes

来源期刊：中国有色金属学报(英文版)2010年增刊第1期

论文作者：李延伟 尹周澜 姚金环 赵卫民 刘长久 钟胜奎

文章页码：249 - 252

Key words：nickel hydroxide; carbon nanotube; Ni/MH batteries; specific capacity; electrochemical impedance spectroscopy

Abstract: Nickel hydroxide doped with multi-wall carbon nanotubes (MCNTs) was synthesized by chemical coprecipitation method. The MCNTs doped nickel hydroxide was used as the electrochemical active material in the positive electrodes of rechargeable alkaline batteries. The powder X-ray diffraction (XRD) analysis shows that the addition of MCNTs induces more structural defect within the crystal lattice of the nickel hydroxide. The cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) tests demonstrate the better reaction reversibility and lower electrochemical impedance of MCNTs doped nickel hydroxide as compared with the pure nickel hydroxide. The charge/discharge tests show that MCNTs addition can improve the specific discharge capacity and increase the discharge voltage of the nickel hydroxide electrode.

基金信息：China Postdoctoral Science Foundation; Project supported by Postdoctoral Science Foundation of Central South University, China
Natural Science Foundation of Guangxi Province, China