화학공학소재연구정보센터
International Journal of Hydrogen Energy, Vol.42, No.30, 18774-18784, 2017
Hydrothermal synthesis of multi-walled carbon nanotubes@MoxW1 (-) S-x(2) hybrid as non-noble metal electrocatalyst for hydrogen evolution reaction
Here, a facile one-pot hydrothermal method is used to synthesize multi-walled carbon nanotubes (MWCNTs) coated MoxW1-xS2 hybrid (MWCNTs@MoxW1-xS2). Ultimately, we obtained a material with MWCNTs evenly wrapped by MoxW1-xS2. After studying a series of the MWCNTs@MoxW1-xS2 with different loading amounts and various mole ratios of molybdenum (Mo) and tungsten (W), we found the [email protected] (77.3 wt. % Mo0.54W0.46S2 content) exhibited the best activity in the hydrogen evolution reaction (HER). Electrochemical experiments testified that this catalyst propelled the HER with an onset potential lowered to -0.15 V vs. RHE, large cathode currents and a Tafel slope of similar to 68 mV per decade in 0.5 M H2SO4 electrolyte. Moreover, it was highly enduring in a corrosive acidic solution since the current density of this compound minished a little even if it was cycled 1000 circulations. These findings proved that the MWCNTs@MoxW1-xS2 was a productive material for the generation of catalysts involving an abundant transition metal, therefore indicated a promising future in the hydrogen economy. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.