Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction

Minghua Chen; Jilei Liu; Weijiang Zhou; Jianyi Lin; Zexiang Shen

doi:10.1038/srep10389

Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction

Sci Rep. 2015 May 22:5:10389. doi: 10.1038/srep10389.

Authors

Minghua Chen¹, Jilei Liu², Weijiang Zhou³, Jianyi Lin⁴, Zexiang Shen⁵

Affiliations

¹ 1] School of Applied Science, Harbin University of Science and Technology, Harbin 150080, P.R. China [2] Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore.
² 1] Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore [2] Energy Research Institute @ NTU, Nanyang Technological University, Singapore 639798.
³ School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 637553.
⁴ Energy Research Institute @ NTU, Nanyang Technological University, Singapore 639798.
⁵ Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore.

Abstract

A novel and facile two-step strategy has been designed to prepare high performance bi-transition-metals (Fe- and Mo-) carbide supported on nitrogen-doped graphene (FeMo-NG) as electrocatalysts for oxygen reduction reactions (ORR). The as-synthesized FeMo carbide -NG catalysts exhibit excellent electrocatalytic activities for ORR in alkaline solution, with high onset potential (-0.09 V vs. saturated KCl Ag/AgCl), nearly four electron transfer number (nearly 4) and high kinetic-limiting current density (up to 3.5 mA cm(-2) at -0.8 V vs. Ag/AgCl). Furthermore, FeMo carbide -NG composites show good cycle stability and much better toxicity tolerance durability than the commercial Pt/C catalyst, paving their application in high-performance fuel cell and lithium-air batteries.

Publication types

Research Support, Non-U.S. Gov't