Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 6, Issue 35, Pages 16882-16889Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta05033c
Keywords
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Funding
- Center for the Computational Design of Functional Layered Materials, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0012575]
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We have demonstrated the microwave-assisted growth of vertically aligned interlayer expanded MoS2 on conductive two-dimensional Ti3C2 MXene nanosheets (MoS2 perpendicular to Ti3C2) and investigated the produced material as an electrocatalyst for the hydrogen evolution reaction (HER). MoS2 perpendicular to Ti3C2 offers a unique inorganic hybrid structure that allows increased exposure of catalytically active edge sites of MoS2, compared to pure MoS2 with a platelet-like morphology. The vertically aligned few-layer MoS2 sheets have an expanded interlayer spacing of 9.4 angstrom. The MoS2 perpendicular to Ti3C2 catalyst exhibited a low onset potential (-95 mV vs. RHE) for the HER and a low Tafel slope (approximate to 40 mV dec(-1)). This catalyst maintained a steady catalytic activity for the HER for over 20 hours.
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