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

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

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 ran...

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Bibliographic Details
Main Authors: Tran, Phong D., Pramana, Stevin S., Field, Martin J., Nguyen, Mai, Bhattacharjee, Anirban, Chiam, Sing Yang, Fize, Jennifer, Artero, Vincent, Wong, Lydia Helena, Loo, Say Chye Joachim, Barber, James
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/98988
http://hdl.handle.net/10220/13282
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Institution: Nanyang Technological University
Language: English
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Summary: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.

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