MOF-Derived NiO/NiCo2O4 and NiO/NiCo2O4-rGO as Highly Efficient and Stable Electrocatalysts for Oxygen Evolution Reaction

被引：97

作者：

Wang, Yanying ^{[1
]}

Zhang, Zhaoyi ^{[1
]}

Liu, Xin ^{[1
]}

Ding, Fang ^{[2
]}

Zou, Ping ^{[1
]}

Wang, Xianxiang ^{[1
]}

Zhao, Qingbiao ^{[3
]}

Rao, Hanbing ^{[1
]}

机构：

[1] Sichuan Agr Univ, Coll Sci, Xin Kang Rd, Yaan 625014, Peoples R China

[2] Shenzhen Univ, Guangdong Res Ctr Interfacial Engn Funct Mat, Nanshan Dist Key Lab Biopolymers & Safety Evaluat, Shenzhen Key Lab Polymer Sci & Technol,Coll Mat S, Shenzhen 518060, Peoples R China

[3] East China Normal Univ, Dept Elect Engn, Key Lab Polar Mat & Devices, Minist Educ, Shanghai 200241, Peoples R China

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2018年 / 6卷 / 09期

关键词：

MOF-derived NiO/NiCo2O4; Oxygen evolution reaction; Electrocatalysis; Metal-organic frameworks; Energy conversion; METAL-ORGANIC FRAMEWORKS; LAYERED DOUBLE HYDROXIDE; LITHIUM-ION BATTERIES; SUPERCAPACITOR APPLICATIONS; FACILE SYNTHESIS; WATER OXIDATION; NI FOAM; COBALT; PERFORMANCE; NANOSHEETS;

D O I：

10.1021/acssuschemeng.8b03221

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We developed a hydrothermal synthesis and high temperature calcination method to synthesize the metal-organic framework (MOF)-derived NiCo2O4/NiO and NiCo2O4/NiO-rGO. These composites were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and Brunner-Emmet-Teller measurements. This work combines excellent catalytic efficiency of the transition metal with large specific surface area and large number of pores of the MOF. Consequently, catalysts for oxygen evolution with high efficiency and low cost were obtained. Both materials show lower overpotential at 430 and 350 mV, respectively, under 10 mA.cm(-2). The Tafel slopes are 49 and 66 mV.dec(-1), respectively, with very small performance attenuation for long-term catalytic reaction. Therefore, the catalysts reported herein possess great potential for application in oxygen evolution reaction.

引用

页码：12511 / 12521

页数：21

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