工程科学学报2016，Vol.38Issue(8)：1139-1144,6.DOI:10.13374/j.issn2095-9389.2016.08.013
球形氧化镍粉末对乙醇的电催化性能的研究
Electrocatalytic performance of spherical NiO for ethanol oxidation
摘要
Abstract
Spherical mesoporous NiO powders were synthesized by a hydrothermal- thermal decomposition method, and their morphology and structure were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and N2 adsorption/desorption analysis. The electrocatalytic performance of NiO powders were systematically studied by cyclic voltammetry ( CV) , chronoamperometry ( CA) and electrochemical impedance spectroscopy ( EIS) . It is found that the prepared mesoporous NiO powders are in spherical morphology with a specific surface area of 35 m2·g-1 and an average pore size of 15. 88 nm. They show good electrocatalytic activity for ethanol oxidation;the oxidation current increases with increasing ethanol concentration and scan rate. The current decay at 0. 60 V for 1000 s is as low as 0. 075%, indicating good stability. CV, CA and EIS measurements show that ethanol oxidation reaction on the spherical mesoporous NiO is a diffusion-controlled process.关键词
直接乙醇燃料电池/电催化/乙醇/氧化镍/介孔材料Key words
direct ethanol fuel cells/electrocatalysis/ethanol/nickel oxide/mesoporous materials分类
信息技术与安全科学引用本文复制引用
湛菁,陆二聚,蔡梦,马雅琳..球形氧化镍粉末对乙醇的电催化性能的研究[J].工程科学学报,2016,38(8):1139-1144,6.基金项目
湖南省科学技术厅科技计划资助项目(2010FJ3012) （2010FJ3012）
