Journal ArticleDOI
Hydrogen evolution reaction on Ni-Al electrodes
P. Los,A. Rami,Andrzej Lasia +2 more
TLDR
In this article, the hydrogen evolution reaction (h.e.r) was studied in alkaline solutions on two types of electrodes: (1) obtained by alloying Raney nickel without or with nickel and (ii) by pressing Raney Nickel and nickel powders at room temperature.Abstract:
The hydrogen evolution reaction (h.e.r) was studied in alkaline solutions on two types of electrodes: (1) obtained by alloying Raney nickel without or with nickel and (ii) by pressing Raney nickel and nickel powders at room temperature. The obtained electrodes are usually very active for the h.e.r. The most active electrode was obtained by pressing Raney nickel with nickel powder (50 wt %). It was characterized by a large roughness factor, R ∼ 10 000 and a very low overpotential at the current density of 250 mA cm−2, η250 = 56 mV. The mechanism of the h.e.r. was studied using a.c. impedance measurements. The high electrode activity is connected with the increase in the intrinsic activity of the porous electrode surface.read more
Citations
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Journal ArticleDOI
Recent progress in alkaline water electrolysis for hydrogen production and applications
Kai Zeng,Dongke Zhang +1 more
TL;DR: In this article, a review of the current state of knowledge and technology of hydrogen production by water electrolysis and identifies areas where R&D effort is needed in order to improve this technology.
Journal ArticleDOI
Enhancing Hydrogen Evolution Activity in Water Splitting by Tailoring Li+-Ni(OH)2-Pt Interfaces
Ram Subbaraman,Dusan Tripkovic,Dusan Strmcnik,Kee-Chul Chang,Masanobu Uchimura,Arvydas P. Paulikas,Vojislav R. Stamenkovic,Nenad M. Markovic +7 more
TL;DR: It is found that a controlled arrangement of nanometer-scale Ni(OH)2 clusters on platinum electrode surfaces manifests a factor of 8 activity increase in catalyzing the hydrogen evolution reaction relative to state-of-the-art metal and metal-oxide catalysts.
Book
Electrochemical Impedance Spectroscopy and its Applications
TL;DR: In this paper, the fundamental processes of diffusion and faradaic reaction at electrodes are discussed and a review of the applications of these processes can be found in a forthcoming volume in this series.
Journal ArticleDOI
Recent advances in heterogeneous electrocatalysts for the hydrogen evolution reaction
Min Zeng,Yanguang Li +1 more
TL;DR: A comprehensive overview of the recent developments of heterogeneous electrocatalysts for the hydrogen evolution reaction is presented in this paper, where the challenges and solutions for further improving their performance are discussed.
Journal ArticleDOI
Design of active and stable Co-Mo-Sx chalcogels as pH-universal catalysts for the hydrogen evolution reaction.
Jakub Staszak-Jirkovský,Christos D. Malliakas,Christos D. Malliakas,Pietro P. Lopes,Nemanja Danilovic,Subrahmanyam S. Kota,Kee-Chul Chang,Bostjan Genorio,Bostjan Genorio,Dusan Strmcnik,Vojislav R. Stamenkovic,Mercouri G. Kanatzidis,Mercouri G. Kanatzidis,Nenad M. Markovic +13 more
TL;DR: By combining the higher activity of CoSx building blocks with the higher stability of MoSx units into a compact and robust CoMoSx chalcogel structure, this work is able to design a low-cost alternative to noble metal catalysts for efficient electrocatalytic production of hydrogen in both alkaline and acidic environments.
References
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Journal ArticleDOI
The analysis of electrode impedances complicated by the presence of a constant phase element
TL;DR: In this article, it was shown that the electrical double-layer at a solid electrode does not in general behave as a pure capacitance but rather as an impedance displaying a frequency-independent phase angle different from 90°.
Journal ArticleDOI
Kinetics of hydrogen evolution on nickel electrodes
Andrzej Lasia,A. Rami +1 more
TL;DR: In this paper, the mechanism and kinetics of the hydrogen evolution reaction (HER) were studied in 1 M NaOH on polycrystalline nickel electrodes using potential step charging, open circuit potential decay and ac impedance techniques.
Journal ArticleDOI
Study of the Kinetics of Hydrogen Evolution Reaction on Nickel‐Zinc Alloy Electrodes
Linlin Chen,Andrzej Lasia +1 more
TL;DR: The mechanism and kinetics of the hydrogen evolution reaction were studied in on nickel-zinc alloy electrodes prepared by electrodeposition at controlled potential as discussed by the authors, and it was found that the reaction proceeds via the Volmer-Heyrovsky mechanism.
Journal ArticleDOI
Tafel current at fractal electrodes: Connection with admittance spectra
TL;DR: In this article, an interesting connection between the Tafel current at a fractal electrode, both in the limit of high and small overpotentials, and the admittance behavior of the same electrode on the other, reveals itself.
Journal ArticleDOI
Kinetics of hydrogen evolution on Ni-Al alloy electrodes
A. Rami,Andrzej Lasia +1 more
TL;DR: In this article, the authors studied the kinetics of the hydrogen evolution reaction on Ni-Al alloy electrodes and found that the reaction proceeds through the Volmer-Heyrovsky mechanism and the kinetic parameters were estimated.
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