info:eu-repo/semantics/article
Current transients for the hydrogen evolution reaction at high overpotentials on silver electrodes in acid solutions: Experiments and modelling
Fecha
2013-10Registro en:
Ruderman, Andres; Juarez, Maria Fernanda; Soldano, Germán; Avalle, Lucia Bernardita; Beltramo, Guillermo Nicolás; et al.; Current transients for the hydrogen evolution reaction at high overpotentials on silver electrodes in acid solutions: Experiments and modelling; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 109; 10-2013; 403-410
0013-4686
CONICET Digital
CONICET
Autor
Ruderman, Andres
Juarez, Maria Fernanda
Soldano, Germán
Avalle, Lucia Bernardita
Beltramo, Guillermo Nicolás
Giesen, M.
Santos, Elizabeth del Carmen
Resumen
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, simultaneously coupled with desorption of sulphate/disulphate anions. Volmer is the ratedetermined step, although the Heyrovsky reaction is only slightly faster. The kinetic parameters havebeen obtained under various conditions of pH and concentration of anions. A catalytic effect due to thepresence of anions has been observed. © 2013 Elsevier Ltd. All rights reserved.