화학공학소재연구정보센터
Electrochimica Acta, Vol.281, 562-570, 2018
The effect of oxygen content of carbon nanotubes on the catalytic activity of carbon-based iron phthalocyanine for oxygen reduction reaction
The development of cost-effective non-precious metal catalysts has attracted much research attention because of their high oxygen reduction reaction (ORR) performance. Herein, based on three kinds of carbon nanotubes (CNTs) with different oxygen content, we prepare three CNTs-based iron phthalocyanine (FePc) composites via only a simple physical method. In surprise, the FePc-CNTs composites with the most oxygen content exhibit the highest ORR catalytic activity in comparison with commercial Pt/C in alkaline media, especially its half-wave potential (E-1/2) and durability as well as methanol tolerance. A large amount of experimental measurements show that these superb catalytic activities can be mainly attributed to the possible formation of novel interactions between FePc and oxidized CNTs. It not only provides more active sites, but also is in favor of stabilizing active centers and removing intermediates in catalytic process. This work displays the effects of oxygen content and roughness of CNTs on the interactions between FePc and CNTs and their important role in ORR catalysis, providing a new insight into simple application of carbons materials. (c) 2018 Elsevier Ltd. All rights reserved.