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Issue 14, 2016
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3D flexible hydrogen evolution electrodes with Se-promoted molybdenum sulfide nanosheet arrays

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Abstract

Developing high-efficiency and stable catalysts from earth-abundant elements for the hydrogen evolution reaction (HER) is essential for renewable energy conversion. In this work, Se-promoted molybdenum sulfide nanosheet arrays supported on flexible carbon cloth (Se–MoS2/CC) have been successfully synthesized and explored for the first time as a 3D hydrogen evolution cathode. Without any active process, the Se–MoS2/CC electrode exhibits greatly enhanced activity with a smaller Tafel slope (63 mV dec−1) and a higher exchange current density (0.16 mA cm−2) than the pristine MoS2/CC one (79 mV dec−1 and 0.1 mA cm−2). The overpotentials needed to attain the current densities of 10 and 100 mA cm−2 are merely 127 and 218 mV, respectively. In addition, Se–MoS2/CC maintains its high electrocatalytic activity for at least 25 h in acidic media.

Graphical abstract: 3D flexible hydrogen evolution electrodes with Se-promoted molybdenum sulfide nanosheet arrays

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Supplementary files

Article information


Submitted
30 Dec 2015
Accepted
19 Jan 2016
First published
21 Jan 2016

RSC Adv., 2016,6, 11077-11080
Article type
Communication

3D flexible hydrogen evolution electrodes with Se-promoted molybdenum sulfide nanosheet arrays

Z. Pu, S. Wei, Z. Chen and S. Mu, RSC Adv., 2016, 6, 11077
DOI: 10.1039/C5RA28078H

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