Preparation of Ni-Ti-O Nanotube Arrays Supported Nano-Ni(OH)2 Electrode and Its Electrocatalytic Oxidation of Methanol

被引：0

作者：

Xie, Yunyun ^{[1
]}

Hou, Guangya ^{[1
]}

Cao, Huazhen ^{[1
]}

Tang, Yiping ^{[1
]}

Wu, Liankui ^{[1
]}

Zheng, Guoqu ^{[1
]}

机构：

[1] College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou,310014, China

来源：

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2018年 / 47卷 / 02期

关键词：

Catalyst activity - Electrocatalysis - Binary alloys - Ethanol - Direct methanol fuel cells (DMFC) - Methanol - Nickel alloys - Titanium alloys - Methanol fuels - Chlorine compounds - Nanotubes - Nickel compounds;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Ni-Ti-O nanotube arrays (NTOs) were fabricated by the anodized Ni-Ti alloy and then annealed in hydrogen atmosphere at 500°C for 2 h. The Ni(OH)2/NTOs electrodes were prepared by a convenient impregnating method. The FESEM, XPS and CV were used to characterize the microstructure, surface electronic states and catalytic performance of Ni(OH)2/NTOs. The effect of the process factors such as impregnation time and concentration of Ni2+ on catalytic activity were investigated. The results show that with prolonging impregnation time and increasing concentration of Ni2+, the catalyst particle size gradually increases and the peak current density firstly increases and then decreases. When the Ni-Ti-O NTs is impregnated in 0.2 mol/L NiCl2•6H2O ethanol solution and 0.2 mol/L NH4OH ethanol solution for 12 h in sequence at 25 ºC, the resulting sample has the best catalytic performance and its peak current density is 38.41 mA•cm-2. Meanwhile, the peak current density of Ni(OH)2/NTOs remains 75.7% of the original value after a consecutive sweep for 1000 times, indicating its excellent cyclic stability. © 2018, Science Press. All right reserved.

引用

页码：636 / 641