Issue 9, 2018

Well-aligned metal–organic framework array-derived CoS2 nanosheets toward robust electrochemical water splitting

Abstract

Exploring high-efficiency and stable nonprecious bifunctional electrocatalysts for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) is highly desirable but still challenging. Herein, we develop a versatile approach for the rational design and fabrication of highly open three-dimensional (3D) hierarchical architectures composed of two-dimensional (2D) CoS2 nanosheets grown on carbon cloth (CoS2 NS/CC) by vulcanizing well-aligned MOF-array precursors. Benefiting from the unique morphology with a high surface area, high density of active sites, and enhanced mass/electrolyte transfer, as well as facile release of the evolved gas, the as-synthesized CoS2 NS/CC exhibits superior catalytic performance and excellent durability for both the HER and OER. Furthermore, when used as a bifunctional electrocatalyst toward overall water splitting, a low cell voltage of 1.58 V is achieved at the current density of 10 mA cm−2 with long-term stability.

Graphical abstract: Well-aligned metal–organic framework array-derived CoS2 nanosheets toward robust electrochemical water splitting

Supplementary files

Article information

Article type
Research Article
Submitted
28 5月 2018
Accepted
30 7月 2018
First published
31 7月 2018

Mater. Chem. Front., 2018,2, 1732-1738

Well-aligned metal–organic framework array-derived CoS2 nanosheets toward robust electrochemical water splitting

N. Yao, T. Tan, F. Yang, G. Cheng and W. Luo, Mater. Chem. Front., 2018, 2, 1732 DOI: 10.1039/C8QM00259B

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