Preparation of nanostructured mesoporous NiCo2O4 and its electrocatalytic activities for water oxidation

被引：24
|
作者：
Hao, Genyan [1 ]
Wang, Wei [1 ]
Gao, Guofeng [1 ]
Zhao, Qiang [1 ]
Li, Jinping [1 ]
机构：
[1] Taiyuan Univ Technol, Res Inst Special Chem, Taiyuan 030024, Shanxi, Peoples R China
来源：
JOURNAL OF ENERGY CHEMISTRY | 2015年 / 24卷 / 03期
基金：
中国国家自然科学基金;
关键词：
water splitting; nanostructure; NiCo2O4; electrocatalytic properties; OXYGEN EVOLUTION REACTION; SPINEL; NI; CO; CATALYSTS; FILMS; FE; ELECTROLYTES; ELECTRODES; PRECURSOR;
D O I：
10.1016/S2095-4956(15)60311-4
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Nanostructured mesoporous NiCo2O4, Co3O4 and NiO spinel oxides were prepared through the hydroxide coprecipitation method using EG (ethylene glycol) as solvent without any template. The NiCo2O4 powders were analyzed by TGA, XRD, N-2 adsorption-desorption, SEM and EDS. And the electrocatalytic properties of NiCo2O4/Ti, Co3O4/Ti and NiO/Ti electrodes for oxygen evolution in 0.1 mol/L KOH (pH = 13) were tested by cyclic voltammetry, Tafel curves and electrolysis. The result shows that NiCo2O4/Ti electrode has higher electrocatalytic activity in oxygen evolution reaction than Co3O4/Ti and NiO/Ti electrodes. NiCo2O4/Ti electrode prepared at 350 degrees C has the highest apparent current density and the highest true current density. The Tafel slope of NiCo2O4/Ti electrode prepared at 350 degrees C is 68.49 mV/dec.
引用
收藏
页码：271 / 277
页数：7
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