Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5146089 | International Journal of Hydrogen Energy | 2017 | 8 Pages |
Abstract
Molybdenum disulfide (MoS2), as a promising catalyst, has been widely investigated for hydrogen evolution reaction (HER). But the low density and poor reactivity of active sites, poor electrical transport, and inefficient electrical contact to the catalyst, leads to the modest performance. In this work, we demonstrate an effective route to overcome those issues by decorating the conductive LixMoS2 nanoparticles on the three-dimensional carbon fiber paper (CFP) through combining hydrothermal method and lithium intercalation. Thus, the dense LixMoS2 nanoparticles of the surface can provide the large number of exposed active sites, the highly-conductive LixMoS2 nanoparticles and CFP substrate can facilitate the transfer of electron not only between the LixMoS2 nanoparticles and CFP, but also between the whole sample and current collector, and the porous networked structure can enable the diffusion and penetration of electrolyte. Prompted by those advantage, the as-prepared samples exhibit outstanding HER catalytic activity with the small Tafel slope of 62 mv decâ1 and the low overpotential of â115.6 mV vs RHE at an electrocatalytic current density of 10 mA cmâ2. Chronoamperometric current test for 10 h confirms the long-term stability of the catalyst.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Qiangbin Yang, Yi He, Yi Fan, Xi Chen, Yubin Li,