Highly Efficient Hydrogen Evolution from Edge-Oriented
WS<sub>2(1–<i>x</i>)</sub>Se<sub>2<i>x</i></sub> Particles on Three-Dimensional Porous NiSe<sub>2</sub> Foam
Haiqing Zhou
Fang Yu
Jingying Sun
Hangtian Zhu
Ishwar Kumar Mishra
Shuo Chen
Zhifeng Ren
10.1021/acs.nanolett.6b03467.s001
https://acs.figshare.com/articles/journal_contribution/Highly_Efficient_Hydrogen_Evolution_from_Edge-Oriented_WS_sub_2_1_i_x_i_sub_Se_sub_2_i_x_i_sub_Particles_on_Three-Dimensional_Porous_NiSe_sub_2_sub_Foam/4206675
The
large consumption of natural fossil fuels and accompanying environmental
problems are driving the exploration of cost-effective and robust
catalysts for hydrogen evolution reaction (HER) in water splitting.
Tungsten dichalcogenides (WS<sub>2</sub>, WSe<sub>2</sub>, etc.) are
promising candidates for such purpose, but their HER performances
are inherently limited by the sparse catalytic edge sites and poor
electrical conductivity. Here we demonstrate a highly active and stable
HER catalyst by integrating ternary tungsten sulfoselenide WS<sub>2(1–<i>x</i>)</sub>Se<sub>2<i>x</i></sub> particles with a 3D porous metallic NiSe<sub>2</sub> foam, in which
good electrical conductivity, good contact, large surface area, and
high-density active edge sites are simultaneously obtained, thus contributing
to outstanding catalytic performance: large cathode current density
(−10 mA/cm<sup>2</sup> at −88 mV), low Tafel slope (46.7
mV/dec), large exchange current density (214.7 μA/cm<sup>2</sup>), and good stability, which is better than most reports on WS<sub>2</sub> and NiSe<sub>2</sub> catalysts. This work paves an interesting
route for boosting HER efficiency of transition metal dichalcogenide
catalysts.
2016-11-02 00:00:00
NiSe 2 foam
WS 2
density
NiSe 2 catalysts
edge sites
conductivity
hydrogen evolution reaction
transition metal dichalcogenide catalysts
Efficient Hydrogen Evolution
HER
mV
Se 2 x Particles
Se 2 x particles
performance
Three-Dimensional Porous NiSe 2 Foam