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Nature Research, Scientific Reports, 1(5), 2015

DOI: 10.1038/srep10389

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Nitrogen-doped graphene-supported transition-metals carbide electrocatalysts for oxygen reduction reaction

Journal article published in 2015 by Minghua Chen, Jilei Liu ORCID, Weijiang Zhou, Jianyi Lin, Zexiang Shen
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

AbstractA 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.