Mesoporous Iron Sulfide for Highly Efficient Electrocatalytic Hydrogen Evolution

Ran Miao; Biswanath Dutta; Sanjubala Sahoo; Junkai He; Wei Zhong; Shaylin A Cetegen; Ting Jiang; S Pamir Alpay; Steven L Suib

doi:10.1021/jacs.7b07044

Mesoporous Iron Sulfide for Highly Efficient Electrocatalytic Hydrogen Evolution

J Am Chem Soc. 2017 Oct 4;139(39):13604-13607. doi: 10.1021/jacs.7b07044. Epub 2017 Sep 7.

Authors

Ran Miao¹, Biswanath Dutta¹, Sanjubala Sahoo^{2

3}, Junkai He², Wei Zhong², Shaylin A Cetegen⁴, Ting Jiang⁴, S Pamir Alpay^{2

3}, Steven L Suib^{1

2

3

4}

Affiliations

¹ Department of Chemistry, U-3060, University of Connecticut , Storrs, Connecticut 06269, United States.
² Institute of Materials Science, U-3136, University of Connecticut , Storrs, Connecticut 06269, United States.
³ Department of Materials Science & Engineering, Unit-3136, University of Connecticut , Storrs, Connecticut 06269, United States.
⁴ Department of Chemical and Biomolecular Engineering, Unit-3222, University of Connecticut , Storrs, Connecticut 06269, United States.

PMID: 28871790
DOI: 10.1021/jacs.7b07044

Abstract

We report a facile synthetic protocol to prepare mesoporous FeS₂ without the aid of hard template as an electrocatalyst for the hydrogen evolution reaction (HER). The mesoporous FeS₂ materials with high surface area were successfully prepared by a sol-gel method following a sulfurization treatment in an H₂S atmosphere. A remarkable HER catalytic performance was achieved with a low overpotential of 96 mV at a current density of 10 mA·cm^-2 and a Tafel slope of 78 mV per decade under alkaline conditions (pH 13). The theoretical calculations indicate that the excellent catalytic activity of mesoporous FeS₂ is attributed to the exposed (210) facets. The mesoporous FeS₂ material might be a promising alternative to the Pt-based electrocatalysts for water splitting.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't