Analysis of the use of voltammetric results as a steady state approximation to evaluate kinetic parameters of the hydrogen evolution reaction

2005 ◽  
Vol 51 (4) ◽  
pp. 731-738 ◽  
Author(s):  
C.A. Marozzi ◽  
M.R. Canto ◽  
V. Costanza ◽  
A.C. Chialvo
Keyword(s):  
Steady State ◽  
Kinetic Parameters ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
State Approximation ◽  
Steady State Approximation

Hydrogen evolution reaction at nickel boride electrodes in aqueous and in aqueous methanolic and ethanolic solutions

1996 ◽  
Vol 74 (3) ◽  
pp. 380-388 ◽  
Author(s):  
Behzad Mahdavi ◽  
Danielle Miousse ◽  
Joël Fournier ◽  
Hugues Ménard ◽  
Jean Lessard
Keyword(s):  
Steady State ◽  
Key Words ◽  
Kinetic Parameters ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Constant Phase Element ◽  
Ac Impedance ◽  
Nickel Boride ◽  
Impedance Data ◽  
Electrocatalytic Behaviour

The hydrogen evolution reaction (HER) was investigated at nickel boride pressed powder electrodes in aqueous and in aqueous methanolic (ethanolic) alkaline (1 M NaOH) solutions in the presence and the absence of NaCl (0.1 M) and H3BO3 (0.1 M) at 25 °C by the steady-state polarization and ac impedance techniques. The ac impedance data were analyzed using the constant-phase element (CPE) model. It was found that the electrocatalytic behaviour of a nickel boride electrode for the HER was the same in all the above media and that the HER proceeds via the Volmer–Heyrovsky mechanism. The kinetic parameters of the HER were determined. Key words: hydrogen evolution reaction, nickel boride electrodes, Tafel curves, ac impedance, kinetic parameters.

The Quasi-Steady-State Approximation: Numerical Validation

1998 ◽  
Vol 75 (9) ◽  
pp. 1158 ◽  
Author(s):  
Richard A. B. Bond ◽  
Bice S. Martincigh ◽  
Janusz R. Mika ◽  
Reuben H. Simoyi
Keyword(s):  
Steady State ◽  
Quasi Steady State ◽  
Numerical Validation ◽  
State Approximation ◽  
Steady State Approximation
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