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Copper molybdenum sulfide: A new efficient electrocatalyst for hydrogen production from water

Lookup NU author(s): Dr Stevin PramanaORCiD

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Abstract

A new inorganic solid state electrocatalyst for the hydrogen evolution reaction (HER) is reported. Highly crystalline layered ternary sulfide copper-molybdenum-sulfide (Cu2MoS4) was prepared by a simple precipitation method from CuI and [MoS4] 2- precursors. In aqueous solution and over a wide pH range (pH 0 to 7), this Cu2MoS4 showed very good catalytic activity for HER with an overvoltage requirement of only ca. 135 mV and an apparent exchange current density of 0.040 mA cm-2 (Tafel slope of ca. 95 mV per decade was found irrespective of the pH value). This Cu2MoS4 catalyst was found to be stable during electrocatalytic hydrogen generation. Therefore, it represents an attractive alternative to platinum. © 2012 The Royal Society of Chemistry.

Publication metadata

Author(s): Tran PD, Nguyen M, Pramana SS, Bhattacharjee A, Chiam SY, Fize J, Field MJ, Artero V, Wong LH, Loo J, Barber J

Publication type: Article

Publication status: Published

Journal: Energy and Environmental Science

Year: 2012

Volume: 5

Issue: 10

Pages: 8912-8916

Print publication date: 20/09/2012

Online publication date: 08/08/2012

ISSN (print): 1754-5692

ISSN (electronic): 1754-5706

Publisher: Royal Society of Chemistry

URL: https://doi.org/10.1039/c2ee22611a

DOI: 10.1039/c2ee22611a

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