Colloidally-synthesized cobalt molybdenum nanoparticles as active and stable electrocatalysts for the hydrogen evolution reaction under alkaline conditions

2016 ◽  
Vol 4 (8) ◽  
pp. 3077-3081 ◽  
Author(s):  
Joshua M. McEnaney ◽  
Taylor L. Soucy ◽  
James M. Hodges ◽  
Juan F. Callejas ◽  
Jared S. Mondschein ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Molybdenum Alloy ◽  
Colloidal Nanoparticles ◽  
Alkaline Conditions ◽  
Molybdenum Nanoparticles

Colloidal nanoparticles of a cobalt–molybdenum alloy were synthesized and found to be active electrocatalysts for the hydrogen evolution reaction in alkaline aqueous solutions.

A crystalline–amorphous Ni–Ni(OH)2 core–shell catalyst for the alkaline hydrogen evolution reaction

2020 ◽  
Vol 8 (44) ◽  
pp. 23323-23329
Author(s):  
Jing Hu ◽  
Siwei Li ◽  
Yuzhi Li ◽  
Jing Wang ◽  
Yunchen Du ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Core Shell ◽  
Alkaline Conditions

Crystalline–amorphous Ni–Ni(OH)2 core–shell assembled nanosheets exhibit outstanding electrocatalytic activity and stability for hydrogen evolution under alkaline conditions.

Electrocatalytic properties of cobalt-molybdenum alloy deposits in the hydrogen evolution reaction

2008 ◽  
Vol 44 (12) ◽  
pp. 1350-1358 ◽  
Author(s):  
V. V. Kuznetsov ◽  
A. A. Kalinkina ◽  
T. V. Pshenichkina ◽  
V. V. Balabaev
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Molybdenum Alloy ◽  
Electrocatalytic Properties

scholarly journals First-Principles Mechanistic Insights into the Hydrogen Evolution Reaction on Ni2P Electrocatalyst in Alkaline Medium

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 307
Author(s):  
Russell W. Cross ◽  
Nelson Y. Dzade
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Density Functional ◽  
Hydrogen Adsorption ◽  
Density Functional Theory Calculations ◽  
Transition Metal Doping ◽  
Experimental Conditions ◽  
Functional Theory ◽  
Alkaline Conditions ◽  
Modification Of The Surface

Nickel phosphide (Ni2P) is a promising material for the electrocatalytic generation of hydrogen from water. Here, we present a chemical picture of the fundamental mechanism of Volmer–Tafel steps in hydrogen evolution reaction (HER) activity under alkaline conditions at the (0001) and (10 1 ¯ 0) surfaces of Ni2P using dispersion-corrected density functional theory calculations. Two terminations of each surface (Ni3P2- and Ni3P-terminated (0001); and Ni2P- and NiP-terminated (10 1 ¯ 0)), which have been shown to coexist in Ni2P samples depending on the experimental conditions, were studied. Water adsorption on the different terminations of the Ni2P (0001) and (10 1 ¯ 0) surfaces is shown to be exothermic (binding energy in the range of 0.33−0.68 eV) and characterized by negligible charge transfer to/from the catalyst surface (0.01−0.04 e−). High activation energy barriers (0.86−1.53 eV) were predicted for the dissociation of water on each termination of the Ni2P (0001) and (10 1 ¯ 0) surfaces, indicating sluggish kinetics for the initial Volmer step in the hydrogen evolution reaction over a Ni2P catalyst. Based on the predicted Gibbs free energy of hydrogen adsorption (ΔGH*) at different surface sites, we found that the presence of Ni3-hollow sites on the (0001) surface and bridge Ni-Ni sites on the (10 1 ¯ 0) surface bind the H atom too strongly. To achieve facile kinetics for both the Volmer and Heyrovsky–Tafel steps, modification of the surface structure and tuning of the electronic properties through transition metal doping is recommended as an important strategy.

Hydrogen Evolution Reaction Evaluation in Aqueous Solutions Containing CO2at Different Pressures

2017 ◽  
Vol 164 (6) ◽  
pp. C294-C299 ◽  
Author(s):  
Flávio V. V. de Sousa ◽  
Pedro R. P. Viana ◽  
Bernard Tribollet ◽  
Oswaldo E. Barcia ◽  
Oscar R. Mattos
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction

Photocatalytic Properties of Layered K3H3Nb10.8O30 in the Hydrogen Evolution Reaction from Aqueous Solutions of Alcohols

2017 ◽  
Vol 53 (2) ◽  
pp. 100-105 ◽  
Author(s):  
V. V. Shvalagin ◽  
G. Ya. Grodzyuk ◽  
G. V. Korzhak ◽  
N. S. Andriushyna ◽  
S. Ya. Kuchmy ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Photocatalytic Properties

scholarly journals Highly efficient and stable Ru nanoparticle electrocatalyst for the hydrogen evolution reaction in alkaline conditions

2021 ◽  
Author(s):  
Frederik Søndergaard-Pedersen ◽  
Harish Lakhotiya ◽  
Martin Bondesgaard ◽  
Munkhshur Myekhlai ◽  
Tania M. Benedetti ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Highly Efficient ◽  
Alkaline Conditions
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