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A model for the Heyrovsky reaction as the second step in hydrogen evolution
(Royal Society of Chemistry, 2011-04)
On a number of electrodes the second step in hydrogen evolution is the reaction of a proton with an adsorbed hydrogen intermediate to form a molecule, which is also known as the Heyrovsky reaction. We have developed a ...
Simulating a catalyst induced quantum dynamical phase transition of a Heyrovsky reaction with different models for the environment
(IOP Publishing, 2022-03)
Through an appropriate election of the molecular orbital basis, we show analytically that the molecular dissociation occurring in a Heyrovsky reaction can be interpreted as a quantum dynamical phase transition, i.e., an ...
Current transients for the hydrogen evolution reaction at high overpotentials on silver electrodes in acid solutions: Experiments and modelling
(Pergamon-Elsevier Science Ltd, 2013-10)
The hydrogen evolution reaction has been investigated on Ag(1 0 0) by potentiostatic current transientsat high overpotentials (- > 0.7 V) in acidic solutions. The reaction proceeds via the Volmer-Heyrovskymechanism, ...
Estudo da variação de pH interfacial durante a reação de desprendimento de hidrogênio por simulação de elementos finitos
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Química - PPGQCâmpus São Carlos, 2012-02-27)
Different papers propose a interfacial pH variation during an electrochemical reaction. Among them, as example, can be cited the electrodeposition of Zn and Co as well as the steel corrosion in aqueous sulphide solutions. ...
Electrochemical Hydrogen Oxidation on Pt(100): a Combined Direct Molecular Dynamics/Density Functional Theory Study
(Electrocatalysis, 2015-08-09)
We have studied the hydrogen oxidation reaction on various catalytic sites at the water/Pt(100) interface with first-principles direct molecular dynamics and minimum energy pathway calculations. The calculations indicate ...
Estudo da eletrodeposição dos sistemas Mo-Zn-Cu e Ni-Mo-Cu com aplicação na reação de desprendimento de hidrogênio
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Química - PPGQCâmpus São Carlos, 2018-02-27)
Molybdenum compounds and alloys have large applicability due to its great properties such as: corrosion protection and electrocatalytic activity. This work reports the electrodeposition study of Mo-Zn-Cu and Ni-Mo-Cu ...
The hydrogen evolution reaction on codeposited Ni-hydrogen storage intermetallic particles in alkaline medium
(Elsevier B.V., 2000-11-01)
The hydrogen evolution reaction (HER) was studied on Ni-LaNi5 and Ni-MmNi(3.4)Co(0.8)Al(0.8) electrode materials in 1 mol dm(-3) NaOH solution. The steady-state polarization curves and electrochemical impedance spectroscopy ...
The hydrogen evolution reaction on codeposited Ni-hydrogen storage intermetallic particles in alkaline medium
(Elsevier B.V., 2000-11-01)
The hydrogen evolution reaction (HER) was studied on Ni-LaNi5 and Ni-MmNi(3.4)Co(0.8)Al(0.8) electrode materials in 1 mol dm(-3) NaOH solution. The steady-state polarization curves and electrochemical impedance spectroscopy ...
Advances in the Kinetic Study of the Hydrogen Electrode Reaction on Metals: Theoretical and Experimental Aspects
(Elsevier, 2018)
Advances in the interpretation of the experimental polarization curves of the hydrogen electrode reaction under the Volmer-Heyrovsky-Tafel mechanism are presented and discussed. A rigorous kinetic treatment is compared ...
Síntesis de partículas nanoestruturadas con actividad electrocatalítica para la reacción de evolución de hidrógeno
(2018-05-09)
RESUMEN:
La actividad electrocatalítica para la reacción de evolución de hidrógeno, REH, de materiales nanométricos base cobalto sintetizados por molienda mecánica de alta energía, fue estudiada para su aplicación en ...