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Activating interfacial S sites of MoS2 boosts hydrogen evolution electrocatalysis
Ist Teil von
Nano research, 2022-03, Vol.15 (3), p.1809-1816
Ort / Verlag
Beijing: Tsinghua University Press
Erscheinungsjahr
2022
Quelle
SpringerNature Journals
Beschreibungen/Notizen
The hydrogen evolution reaction (HER) of molybdenum disulfide (MoS
2
) is limited in alkaline and acid solution because the active sites are on the finite edge with extended basal plane remaining inert. Herein, we activated the interfacial S sites by coupling with Ru nanoparticles on the inert basal plane of MoS
2
nanosheets. The density functional theory (DFT) calculation and experimental results show that the interfacial S electronic structure was modulated. And the results of Δ
G
H*
demonstrate that the adsorption of H on the MoS
2
was also optimized. With the advantage of interfacial S sites activation, the Ru-MoS
2
needs only overpotential of 110 and 98 mV to achieve 10 mA·cm
−2
in both 0.5 M H
2
SO
4
and 1 M KOH solution, respectively. This strategy paves a new way for activating the basal plane of other transition metal sulfide electrocatalysts for improving the HER performance.