Hierarchically structured bimetallic electrocatalyst synthesized via template-directed fabrication MOF arrays for high-efficiency oxygen evolution reaction

被引：56

作者：

Guo, Meichen ^{[1
]}

Li, Yao ^{[1
]}

Zhou, Lingxi ^{[1
]}

Zheng, Qiaoji ^{[1
]}

Jie, Wenjing ^{[1
]}

Xie, Fengyu ^{[1
]}

Xu, Chenggang ^{[1
]}

Lin, Dunmin ^{[1
]}

机构：

[1] Sichuan Normal Univ, Coll Chem & Mat Sci, Chengdu 610066, Sichuan, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2019年 / 298卷

关键词：

Template-directed fabrication; MOF arrays; Bimetallic electrocatalyst; Hierarchical structure; Oxygen evolution reaction; HIGH-PERFORMANCE; BIFUNCTIONAL CATALYST; NANOSHEET ARRAYS; CARBON CLOTH; WATER; COBALT; NANOPARTICLES; NICKEL; ELECTROLYSIS; ELECTRODES;

D O I：

10.1016/j.electacta.2018.12.118

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

It is of great significance to develop high-efficiency and low-cost electrocatalysts towards oxygen evolution reaction (OER) due to their critical role in the electrochemical water splitting to produce H-2 fuel. Herein, a well-controlled hierarchical structured bimetallic electrocatalyst of Co3O4@Ni2P-CoP/NF is constructed via phosphating and carbonating Co3O4 nanowires template-directed fabrication Ni-substituted ZIF-67 arrays onto a 3D Ni foam substrate. The as-obtained hierarchical structured nano-material displays superior electrocatalytic performance with a small overpotential of 298 mV required to achieve the current density of 50 mAcm(-2) and reveals high electrocatalytic activity with long-term durability after continuously working for 40 h in 1.0 M KOH. The good performance of the material for OER can be attributed to the synergistic effect of optimized hierarchical structure, partial substitution of Ni for Co, high porosity and N, P-codoping. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：525 / 532

页数：8

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