Author(s): Ren, YB (Ren, Yanbiao); Zhang, LC (Zhang, Lincai); He, XW (He, Xiaowu)
Source: CATALYSIS LETTERS Volume: 150 Issue: 3 Pages: 623-630 DOI: 10.1007/s10562-019-02961-x Published: MAR 2020
Abstract: Here, a simple dipping coating route was applied to synthesize a series of CoMoSx/NiMoSx chalcogel thin film which in situ grown uniformly on the 3D skeleton of Ni foam as electrocatalysts for the hydrogen evolution reaction (HER). We attempt to understand the effect of pH on the kinetics of the HER. As expected, CoMoSx@Ni foam electrocatalyst presents a low overpotential of 118 mV at 10 mA cm(-2) and a low Tafel slope of 85 mV dec(-1) for HER in alkaline solution and an overpotential of 129 mV at 10 mA cm(-2) and a low Tafel slope of 113 mV dec(-1) for HER in acidic solution. The long-term performance of CoMoSx-3@Ni foam revealed that there was no obvious decrease in catalytic activity after 5000 cycles in alkaline medium. We are able to synthesize low-cost and pH-universal catalysts for efficient electrocatalytic production of hydrogen. Graphic A dipping coating route was applied to synthesize a series of chalcogel films in situ grown on 3D Ni foam skeleton as catalysts for HER. We attempt to understand the effect of pH on the kinetics of HER. CoMoSx as pH-universal catalyst presents a low overpotential and Tafel slope for HER. HER polarization curves in 0.1 M KOH for chalcogel thin film on Ni foam, scan rate is 5 mV/s. And the inset images are TEM and simulative of chalcogel thin film
Accession Number: WOS:000513263600003
ISSN: 1011-372X
eISSN: 1572-879X
Full Test: https://link.springer.com/article/10.1007%2Fs10562-019-02961-x