Jump to main content
Jump to site search

Issue 29, 2017
Previous Article Next Article

MOF-derived CoSe2 microspheres with hollow interiors as high-performance electrocatalysts for the enhanced oxygen evolution reaction

Author affiliations

Abstract

Electrocatalytic water splitting has been recognized to be one of the most promising routes to acquire hydrogen. However, the high-efficiency water splitting is limited by the sluggish kinetics of the anodic oxygen evolution reaction (OER). Metal–organic frameworks (MOFs) have been extensively utilized as precursors to synthesize high-performance electrocatalysts. Herein, a facile template-engaged strategy is adopted to fabricate hollow microspheres derived from a Co-MOF. After a thermally induced selenylation process under an argon atmosphere, the Co-MOF is successfully converted into CoSe2 microspheres at different temperatures. The optimized CoSe2-450 microspheres display excellent OER electrocatalytic performance in 1.0 M KOH aqueous solution, exhibiting 10 mA cm−2 at η = 330 mV with a small Tafel slope of 79 mV dec−1, even superior to those of a commercial IrO2 catalyst. Moreover, CoSe2-450 shows excellent durability without obvious decay after 1000 cyclic voltammetry cycles. This is due to the hollow interior of CoSe2 microspheres and well-distributed active sites, which can effectively offer space for fast mass transport and electron transfer.

Graphical abstract: MOF-derived CoSe2 microspheres with hollow interiors as high-performance electrocatalysts for the enhanced oxygen evolution reaction

Back to tab navigation

Supplementary files

Publication details

The article was received on 28 May 2017, accepted on 28 Jun 2017 and first published on 28 Jun 2017


Article type: Paper
DOI: 10.1039/C7TA04662F
Citation: J. Mater. Chem. A, 2017,5, 15310-15314
  •   Request permissions

    MOF-derived CoSe2 microspheres with hollow interiors as high-performance electrocatalysts for the enhanced oxygen evolution reaction

    X. Liu, Y. Liu and L. Fan, J. Mater. Chem. A, 2017, 5, 15310
    DOI: 10.1039/C7TA04662F

Search articles by author

Spotlight

Advertisements