Cobalt/cerium-based metal-organic framework composites for enhanced oxygen evolution electrocatalysis

被引：32

作者：

Ai, Lunhong ^{[1
]}

Luo, Yang ^{[1
,2
]}

Huang, Weijie ^{[2
]}

Tian, Yao ^{[1
,2
]}

Jiang, Jing ^{[1
]}

机构：

[1] Chongqing Jiaotong Univ, Coll Mat Sci & Engn, Chongqing 400074, Peoples R China

[2] China West Normal Univ, Coll Chem & Chem Engn, Nanchong 637002, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 26期

关键词：

Metal-organic framework; Oxygen evolution reaction; Electrocatalysis; Cobalt; Cerium; HETEROGENEOUS ELECTROCATALYSTS; NANOSHEETS; ELECTRODE; HYBRID; FOAM;

D O I：

10.1016/j.ijhydene.2022.02.043

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Rational design of multivariate metal-organic framework (MOF)-based electrocatalysts with favorably heterostructures is highly desirable for the oxygen evolution reaction (OER). In this work, we report the rational construction of a series of CoCe-based MOFs (Co1-xCex-BTC, x = 0, 0.1, 0.15 and 0.2) for OER electrocatalysis, and demonstrate the catalytically inactive Ce-BTC as a new OER promoter greatly boosts the electroctalaytic performance of Co-BTC. The resulting Co0.9Ce0.1-BTC exhibits the outstanding OER performances with a low overpotential of 308 mV at a current density of 10 mA cm(-2) and a long-term stability within 25 h, which is favorably comparable to those of the commercial IrO2 and other previously reported MOF-based OER electrocatalysts. (C) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：12893 / 12902

页数：10

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