title: Nitrogen-doped Graphene-Supported Transition-metals Carbide Electrocatalysts for Oxygen Reduction Reaction.
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.
authors.affiliation: 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.
authors.forename: Minghua
authors.initials: M
authors.lastname: Chen
authors.affiliation: 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.
authors.forename: Jilei
authors.initials: J
authors.lastname: Liu
authors.affiliation: School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore 637553.
authors.forename: Weijiang
authors.initials: W
authors.lastname: Zhou
authors.affiliation: Energy Research Institute @ NTU, Nanyang Technological University, Singapore 639798.
authors.forename: Jianyi
authors.initials: J
authors.lastname: Lin
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore.
authors.forename: Zexiang
authors.initials: Z
authors.lastname: Shen