Facile preparation of amorphous NiWSex and CoWSex nanoparticles for the electrocatalytic hydrogen evolution reaction in alkaline condition

The development of catalysts as an alternative to platinum group metals (PGMs) has great importance to improve the efficiency of hydrogen evolution reaction (HER). Herein, the novel amorphous ternary refractory metal selenides (MWSex; M = Co and Ni), which were synthesized by hot-injection approach,...

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Bibliographic Details
Published in:Journal of electroanalytical chemistry (Lausanne, Switzerland) Switzerland), 2020-01, Vol.856, p.113674, Article 113674
Main Authors: Aslan, Emre, Sarilmaz, Adem, Yanalak, Gizem, Chang, Crosby Soon, Cinar, Ibrahim, Ozel, Faruk, Patir, Imren Hatay
Format: Article
Language:English
Subjects:
Amorphous materials
Amorphous ternary metal selenides
Catalytic activity
Crystal structure
Electrocatalysts
Electrocatalytic hydrogen evolution
Hot injection method
Hydrogen evolution reactions
Magnetic properties
Morphology
Nanoparticles
Nickel
Noble metals
Optical properties
Platinum
Selenides
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Summary:The development of catalysts as an alternative to platinum group metals (PGMs) has great importance to improve the efficiency of hydrogen evolution reaction (HER). Herein, the novel amorphous ternary refractory metal selenides (MWSex; M = Co and Ni), which were synthesized by hot-injection approach, were firstly investigated on the electrocatalytic HER in alkaline media. Optical, electrochemical and magnetic properties of the electrocatalysts were explored, as well as the chemical structures and morphologies. These results clearly show that the obtained materials are having the amorphous crystal structure and are shaped as spherical and rod-like structures. Moreover, the addition of Ni and Co metals into the WSex structure were raised the catalytic activity of HER comparing to that of only WSex. This work paves the way for the exploration of copper-based amorphous selenides as electrocatalysts for the hydrogen evolution in order to replace noble metal Pt. [Display omitted] •Amorphous MWSex are prepared by hot-injection approach for the first time.•Optical, electrochemical and magnetic properties of MWSex are explored.•Electrocatalytic HER properties of MWSex are investigated in the alkaline media.•Electrocatalytic activities are increased by adding Ni and Co into WSex.
ISSN:1572-6657
1873-2569
DOI:10.1016/j.jelechem.2019.113674