Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 9, Issue 22, Pages 18675-18681Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b01333
Keywords
hydrogen-evolution reaction; molybdenum sulfides; electradeposition; relectrocatalysis; Mo3S13
Funding
- National Natural Science Foundation of China [21475003, 21675003, 11375229, 21335001]
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Molybdenum sulfides are considered to be one kind of the promising candidates as cheap and efficient electrocatalysts for hydrogen evolution reaction (HER). But this is still a gap on electrocatalytic performance toward Pt. To further enhance electrocatalytic activity of molybdenum sulfides, in this work, we prepared Mo3S13 films with high ratio of sulfur to molybdenum by electrodeposition. The Mo3S13 films exhibit highly efficient electrocatalytic activity for HER and achieve a current density of 10 mA/cm(2) at an overpotential of 200 mV with an onset potential of 130 mV vs RHE and a Tafel slope of 37 mV/dec, which is superior to other reported MoS2 films. The highly electrocatalytic activity is attributed to high percentage of bridging S-2(2-) and apical S2- as well as good conductivity. This study provides an avenue for designing new molybdenum sulfides electrocatalysts.
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