A three-dimensionally structured electrocatalyst: Cobalt-embedded nitrogen-doped carbon nanotubes/nitrogen-doped reduced graphene oxide hybrid for efficient oxygen reduction

Authors

Changting Wei, Chinese Academy Of Sciences, University of Chinese Academy of Sciences
Hongjing Wang, Zhejiang University of Technology
Kamel Eid, Chinese Academy Of Sciences, University of Chinese Academy of Sciences
Jeonghun Kim, University of WollongongFollow
Jung Ho Kim, University of WollongongFollow
Zeid Abdullah Alothman, King Saud University
Yusuke Yamauchi, University of WollongongFollow
Liang Wang, Zhejiang University of TechnologyFollow

RIS ID

111055

Publication Details

Wei, C., Wang, H., Eid, K., Kim, J., Kim, J., Alothman, Z. Abdullah., Yamauchi, Y. & Wang, L. (2017). A three-dimensionally structured electrocatalyst: Cobalt-embedded nitrogen-doped carbon nanotubes/nitrogen-doped reduced graphene oxide hybrid for efficient oxygen reduction. Chemistry - A European Journal, 23 (3), 637-643.

Abstract

To develop low-cost and efficient oxygen reduction reaction (ORR) catalysts, a novel hybrid comprising cobalt-embedded nitrogen-doped carbon nanotubes and nitrogen- doped reduced graphene oxide (Co-NCNT/NrGO-800) was simply prepared by pyrolysis. The combination of nanotubes and graphene, and the efficient doping with cobalt and nitrogen, greatly contribute to the excellent ORR performance. This optimized Co-NCNT/NrGO catalyst exhibits a positive onset potential of 0.91 V and a half-wave potential of 0.82 V, combined with a relatively low peroxide yield, better durability, and better methanol tolerance than commercially available Pt/C, which makes it a promising candidate as a low-cost and effective non-precious-metal ORR catalyst.