电化学2018，Vol.24Issue(1)：40-45,6.DOI:10.13208/j.electrochem.170444
玻碳材料脉冲电沉积纳米晶体镍的制备及其性能研究
Preparation and Properties of Nanocrystalline Nickel by Pulse Electrodeposition on Glassy Carbon
张亚莉 1张鸣显 1郭腾达 1赵彦杰 1于升学1
作者信息
- 1. 燕山大学环境与化学工程学院,河北秦皇岛066004
- 折叠
摘要
Abstract
Nanocrystalline nickel exhibits electrocatalytic activity for methanol.In this work,nanocrystalline nickel coating has been obtained by using the double pulse method on glassy carbon materials surface.The influence of pulse conditions on the grain size of nanocrystalline nicke was studied.The concentrations and compositions of the plating bath were 300 g· L-1 NiSO4·6H2O,45g· L-1 NiCl2·6H2O,40 g·L-1 H3BO3,5 g· L-1C7H5NO3S,and 0.05 g· L-1C12H25NaO4S.The optimal pulse process parameters including the average pulse current density of 100 mA· cm-2,pulse duty ratio of 30％,pulse frequency of 1000 Hz,pH of 1.5,and treatment temperature of 55 ℃ were determined.The grain size,surface morphology,structure and electrochemical properties of the prepared nanocrystalline nickel were investigated by XRD,TEM,cyclic voltammetry and electrochemical impedance spectroscop.Accordingly,the dense,smooth,and continuous uniform electrodeposition layer with the typical face-centered cubic structure was developed.The average size of the nanocrystalline nickel was about 18 nm.Cyclic voltammetric and electrochemical impedance spectroscopic results showed that the nanocrystalline nickel electrodeposited on the glassy carbon surface had good electrocatalytic activity for methanol in an alkaline environment.关键词
玻碳材料/电沉积/纳米晶体镍/催化性能Key words
glassy carbon material/electrodeposition/nanocrystalline nickel/catalytic performance分类
化学化工引用本文复制引用
张亚莉,张鸣显,郭腾达,赵彦杰,于升学..玻碳材料脉冲电沉积纳米晶体镍的制备及其性能研究[J].电化学,2018,24(1):40-45,6.
