info:eu-repo/semantics/article
Electrochemical and geometrical characterization of iridium oxide electrodes in stainless steel substrate
Registro en:
Mayorga Martinez, Carmen Clotilde; Madrid, Rossana Elena; Felice, Carmelo Jose; Electrochemical and geometrical characterization of iridium oxide electrodes in stainless steel substrate; Elsevier Science Sa; Sensors and Actuators B: Chemical; 133; 2; 8-2008; 682-686
0925-4005
CONICET Digital
CONICET
Autor
Mayorga Martinez, Carmen Clotilde
Madrid, Rossana Elena
Felice, Carmelo Jose
Resumen
A geometrical and electrochemical characterization of stainless steel electrodes electrodeposited with iridium oxide (IrO2) is presented. There is a dramatic increase in the double layer capacitance (C) and an important decrease in the charge transfer resistance (Rct) after electrodeposition, causing also a significant two orders of magnitude reduction of the electrode-electrolyte interface impedance (EEIZ). These phenomena may be explained by the fine-grained iridium oxide, which has a high grain boundary density and which increases the actual electrodic area. An RC model is presented, which would explain the electrical behaviour of the system. Fil: Mayorga Martinez, Carmen Clotilde. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentina Fil: Madrid, Rossana Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentina Fil: Felice, Carmelo Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto Superior de Investigaciones Biológicas. Universidad Nacional de Tucumán. Instituto Superior de Investigaciones Biológicas; Argentina