Determination of the Rate Constants of Hydrogen Evolution and Permeation into Steel in Acidic Sulphate Solutions by IPZ method

Hydrogen absorption into steel membrane was studied using an electrochemical hydrogen permeation technique. The investigations were conducted in the H2SO4 + Na2SO4 solutions with the constant ionic strength equal to 1 and pH equal to 1.80 and 1.13. The influence of CNS- anions has been studied. The...

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Bibliographic Details
Main Authors: Tsygankova, Liudmila, Kosyanenko, Evgeny
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:Hydrogen absorption into steel membrane was studied using an electrochemical hydrogen permeation technique. The investigations were conducted in the H2SO4 + Na2SO4 solutions with the constant ionic strength equal to 1 and pH equal to 1.80 and 1.13. The influence of CNS- anions has been studied. The Iyer, Pickering, Zamanzadeh (IPZ) analysis of the measured steady-state hydrogen permeation rates gives the rate constants of the steps of the HER, hydrogen surface coverage OH, exchange current density, io, and kinetic-diffusion constant. The kinetic parameters of the HER have been estimated at a constant potential and a constant hydrogen overpotential. These data testify about the Volmer rate determining step (rds) in the HER.
ISSN:1938-5862
1938-6737
DOI:10.1149/1.2408923