Lookup NU author(s): Dr Stevin Pramana
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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.
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
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
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