US EPA

1632251 

Journal Article 

Preparation and characterisation of Ti/RuO2 anodes obtained by sol-gel and conventional routes 

Terezo, AJ; Pereira, EC 

2002 

1 

Materials Letters
ISSN: 0167-577X
EISSN: 1873-4979 

53 

4-5 

339-345 

WOS:000174535000020 

The preparation and characterisation of Ti/RuO2 anodes and
RuO2 powders obtained by the thermal decomposition of RuCl3 using isopropanol solution method
(ISM) and the polymeric precursor method (PPM) is described. The materials were investigated by
SEM and = attempting to correlate its morphological and microstructural properties with
electrochemical features of the electrodes. SEM micrographies show that the electrode coatings
obtained by PPM are rougher than those prepared by ISM. XRD analyses show that the crystallite
sizes of the materials obtained by PPM are smaller than those from ISM. It was also observed that
RuO2 powders obtained by ISM show an expansion in the unit cell. The electrochemical proper-ties
were investigated by cyclic voltammetry and accelerated stability tests for the oxygen evolving
reaction in acid medium. Higher voltammetric charge and stability were observed for the
electrodes prepared by PPM. Microstructural, morphological and electrochemical features were
correlated to the methods of preparation. (C) 2002 Elsevier Science B.V All rights reserved. 

electrocatalisys; DSA; ruthenium dioxide; OER; pechini method; polymeric precursor method; sol-gel