Título
Study of the catalytic activity for oxygen reduction of polythiophene modified with cobalt or nickel
Autor
RITA DEL ROSARIO SULUB SULUB
WENCESLAO MARTINEZ MILLAN
MASCHA AFRA SMIT
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
Carbon black supported materials based on polythiophene and cobalt or nickel were studied as oxygen reduction catalysts. Polythiophene was chemically polymerized onto carbon black, and modified with cobalt or nickel salts to obtain carbon supported polythiophene-cobalt and polythiophene-nickel. For reasons of comparison, the precursor, unmodified carbon-supported polythiophene was studied, as well as unsupported polythiophene particles. In order to study the physical, chemical and electrochemical properties, TGA, SEM, EDAX and electrochemical methods were used. SEM images show porous materials with a particle size of around 110 nm for the carbon supported materials. EDAX tests confirmed the presence of approximately 7 wt% of either cobalt or nickel in the modifiedmaterials. Cyclic voltammetry confirmed the presence of ORR peaks in the cathodic area in all materials, except for polythiophene only. Based on kinetic parameters obtained using RDE tests and on electrochemical stability as determined from potentiostatic test, it was concluded that the material with best ORR catalytic activity is carbon supported polythiophene-cobalt.
Fecha de publicación
2009
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Fuente
International Journal of Electrochemical Science, 4(7), 1015-1027, 2009
Idioma
Inglés
Relación
&
Smit, M. A. (2009). Study of the catalytic activity for oxygen reduction of polythiophene modified with cobalt or nickel. International Journal of Electrochemical Science, 4(7), 1015-1027.
Sugerencia de citación
Sulub, R., Martinez-Millan, W.,
Repositorio Orígen
Repositorio Institucional CICY
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