Abstract
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.
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