• 文献标题:   Promoted Oxygen Reduction Activity of Ag/Reduced Graphene Oxide by Incorporated CoOx
  • 文献类型:   Article
  • 作  者:   SUN F, ZHANG GX, XU YQ, CHANG Z, WAN PB, LI YP, SUN XM
  • 作者关键词:   oxygen reduction reaction, coox, silver, synergistic effect
  • 出版物名称:   ELECTROCHIMICA ACTA
  • ISSN:   0013-4686 EI 1873-3859
  • 通讯作者地址:   Beijing Univ Chem Technol
  • 被引频次:   9
  • DOI:   10.1016/j.electacta.2014.03.125
  • 出版年:   2014

▎ 摘  要

CoOx incorporated in Ag/reduced graphene oxide nanocomposites (CoOx-Ag/rGO) were synthesized through an one-pot solvothermal method. Electrochemical results showed that CoOx nanoparticles could greatly promote dispersion of anchored Ag nanoparticles and increase the limiting current density for the whole CoOx-Ag/rGO nanocomposites when catalyzing oxygen reduction reaction (ORR) in alkaline medium. With CoOx formation beside the Ag nanoparticles, a much higher current density and a preferable four-electron pathway were achieved for the CoOx-Ag/rGO nanocomposites. Meanwhile, the CoOx-Ag/rGO nanocomposites showed remarkable long-term stability and tolerance toward methanol than the commercially available 20% Pt/C catalyst. More importantly, this work could finally lead to a practical significance for developing high-performance bicomponent electrocatalysts with low-cost for fuel cells and relevant electrochemical technologies. (C) 2014 Elsevier Ltd. All rights reserved.