Issue 4, 2018

Phase controllable fabrication of zinc cobalt sulfide hollow polyhedra as high-performance electrocatalysts for the hydrogen evolution reaction

Abstract

Structure and phase modulations allow the development of highly active, cost-effective and stable electrocatalysts for the hydrogen evolution reaction (HER) but are rather challenging. In this paper, Zn–Co–S hollow/porous polyhedra with controllable phases were fabricated via solvent-based sulfidation at room temperature followed by thermal annealing. The obtained hollow structure Zn–Co–S-300 with an amorphous phase exhibits excellent electrocatalytic HER activity, which is higher than crystalline Zn–Co sulfides annealed at a higher temperature. Zn–Co–S-300 also shows a long-term working stability (91.7% current density retention over 10 hours) in alkaline media. This work provides a feasible approach for the fabrication of homogeneous ternary transition metal sulfide (TMS) electrocatalysts via the Kirkendall effect towards high-efficiency HER applications.

Graphical abstract: Phase controllable fabrication of zinc cobalt sulfide hollow polyhedra as high-performance electrocatalysts for the hydrogen evolution reaction

Supplementary files

Article information

Article type
Paper
Submitted
31 Oct 2017
Accepted
13 Dec 2017
First published
14 Dec 2017

Nanoscale, 2018,10, 1774-1778

Phase controllable fabrication of zinc cobalt sulfide hollow polyhedra as high-performance electrocatalysts for the hydrogen evolution reaction

B. Zhang, G. Yang, C. Li, K. Huang, J. Wu, S. Hao, J. Feng, D. Peng and Y. Huang, Nanoscale, 2018, 10, 1774 DOI: 10.1039/C7NR08097B

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