Open AccessCharacterization of RuO2, Ru and Ru0.3Ti0.7O2 materials and their behaviour in hydrogen evolution reaction
Author(s) -
Ivo Paseka
Publication year - 2005
Publication title -
chemical industry and chemical engineering quarterly
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.189
H-Index - 26
eISSN - 2217-7434
pISSN - 1451-9372
DOI - 10.2298/ciceq0503114p
Subject(s) - electrode , materials science , hydrogen , cathodic protection , polarization (electrochemistry) , oxide , inorganic chemistry , chemical engineering , electrochemistry , chemistry , metallurgy , organic chemistry , engineering
Polarization characteristics of the hydrogen evolution reaction were studied at RuO2 Ru0.3Ti0.7O2 and Ru electrodes prepared by various methods. The initial activity of all oxide electrodes, related to the real surface area, was comparable. After a long-term cathodic loading of electrodes the change of physical-chemical properties occurred. Voltametric curves of electrodes showed that ad- and absorption of hydrogen occurred after a long-term cathodic loading. Absorbed hydrogen caused changes of RuO2 lattice parameters and even changes of lattice parameters of the Ti support on which the RuO2 layer was deposited. Arisen stresses in the Ru - oxides layers caused the destruction of the electrode layer and limited life-time of these electrodes.