Development of durable carbon black/titanium dioxide supported macrocycle catalysts for oxygen reduction reaction
Data(s) |
2009
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Resumo |
Carbon black and titanium dioxide supported iron tetraphenylporphyrin (FeTPP/TiO2/C) catalysts for oxygen reduction reaction (ORR) were prepared by sol-gel and precipitation methods followed by a heat-treatment at temperatures of 400-1000 degrees C. The FeTPP/C and TiO2/C were also studied for comparison. The FeTPP/TiO2/C pyrolyzed at 700 degrees C exhibits significantly improved stability while maintaining high activity towards ORR in comparison with the FeTPP/C counterpart. The electrochemical study combined with XRD, XPS, and SEM/EDX analyses revealed that the appropriate dispersion of TiO2 on the surface of FeTPP/TiO2/C catalysts, which depending on heat-treatment temperature, plays a crucial role in determining the activity and stability of catalysts. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Li XG;Liu CP;Xing W;Lu TH.Development of durable carbon black/titanium dioxide supported macrocycle catalysts for oxygen reduction reaction,JOURNAL OF POWER SOURCES ,2009,193(2):470-476 |
Palavras-Chave | #NITROGEN-CONTAINING CARBON #ELECTROLYTE FUEL-CELLS #HEAT-TREATED IRON #HIGH-AREA CARBON #NANOFIBER ELECTRODES #CATHODE CATALYST #O-2 REDUCTION #ELECTROCATALYSTS #ELECTROREDUCTION #METHANOL |
Tipo |
期刊论文 |