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Architecture of CoNx single clusters on nanocarbon as excellent oxygen reduction catalysts with high-efficient atomic utilization

Abstract

A new strategy to fabricate CoNx single cluster supported nanocarbon catalysts (C/P/2Co600) with enhanced atomic utilization towards oxygen reduction reaction (ORR) is reported. N-coordination protection and low-temperature pyrolysis are the two key factors for the formation of CoNx single clusters on the nanocarbon supports. Morphological and structural identification confirmed the simultaneous anchoring of homo-dispersed CoNx single clusters and N-doping on the nanocarbon at relatively mild thermal treatment condition. Expectedly, the obtained single clusters catalyst with a trace amount of metal atoms exhibited excellent ORR performance including a positive half-wave potential (0.846 V), a high mass activity (0.98 A mgCo-1, ampere per milligram of cobalt) and outstanding chemical durability after 8000 potential cycles. We believe that our findings provide a new route for the rational design of low-cost and high active ORR catalytic materials.

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Publication details

The article was received on 27 Mar 2017, accepted on 10 May 2017 and first published on 12 May 2017


Article type: Paper
DOI: 10.1039/C7NR02165H
Citation: Nanoscale, 2017, Accepted Manuscript
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    Architecture of CoNx single clusters on nanocarbon as excellent oxygen reduction catalysts with high-efficient atomic utilization

    T. He, H. Xue, X. Wang, S. He, Y. Lei, Y. Zhang, R. Shen, Y. Zhang and J. Xiang, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR02165H

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