Investigation of the electro-oxidation of Co on Pt-based carbon supported catalysts 9'PT IND.75' 'SN IND.25'/ C, 'PT IND.65''RU IND.35'/C and Pt/C) by electrochemical impendance spectroscopy - Ciapina, Eduardo G.; Gonzalez, Ernesto Rafael (Journal of Electroanalytical Chemistry, 2009)