Effect of pH on the Oxide Film Formation on a Pristine Zr Electrode

0475152 - ÚFCH JH 2018 RIV CZ eng C - Conference Paper (international conference)
Hromadová, Magdaléna - Kocábová, Jana - Kolivoška, Viliam - Pospíšil, Lubomír
Effect of pH on the Oxide Film Formation on a Pristine Zr Electrode.
XXXVII. Moderní elektrochemické metody. Sborník přednášek mezinárodní odborné konference. Ústí nad Labem: Best servis, 2017 - (Navrátil, T.; Fojta, M.; Schwarzová, K.), s. 71-75. ISBN 978-80-905221-5-2.
[Moderní elektrochemické metody /37./. Jetřichovice (CZ), 15.05.2017-19.05.2017]
R&D Projects: GA ČR(CZ) GA16-03085S
Institutional support: RVO:61388955
Keywords : zirconium * oxide film * hydrogen evolution
OECD category: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Effect of pH on the oxidation of zirconium metal was studied by cyclic voltammetry in
aqueous borate buffer solutions as a function of the potential scan rate and pH from 4.80 to
9.17. The results show that the oxide growth kinetics depends on pH of the electrolyte
solution and the total amount of irreversibly formed oxide under the potentiodynamic
conditions decreases with decreasing buffer pH in accord with thermodynamic considerations.
Cathodic current corresponding to hydrogen evolution reaction diminishes in the presence of
anodically modified electrode compared to bare zirconium.
Permanent Link: http://hdl.handle.net/11104/0272003