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Issue 36, 2018
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Iron-decorated nitrogen-rich carbons as efficient oxygen reduction electrocatalysts for Zn–air batteries

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Abstract

A low-cost and scalable method has been developed to synthesize Fe-decorated N-rich carbon electrocatalysts for the oxygen reduction reaction (ORR) based on pyrolysis of metal carbonyls containing metal–organic frameworks (MOFs). Such a method simultaneously optimizes the Fe-related active sites and the porous structure of the catalysts. Accordingly, the best-performing Fe-NC-900-M catalyst shows excellent ORR activity with a half-wave potential of 0.91 V vs. RHE, exceeding that of the 40% Pt/C catalyst in alkaline media. Furthermore, the zinc–air batteries constructed with Fe-NC-900-M as the cathode catalyst exhibit high open-circuit voltage (1.5 V) and peak power density (271 mW cm−2), and outperform most zinc–air batteries with noble-metal free ORR catalysts.

Graphical abstract: Iron-decorated nitrogen-rich carbons as efficient oxygen reduction electrocatalysts for Zn–air batteries

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Publication details

The article was received on 07 Jun 2018, accepted on 07 Aug 2018 and first published on 16 Aug 2018


Article type: Communication
DOI: 10.1039/C8NR04627A
Nanoscale, 2018,10, 16996-17001

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    Iron-decorated nitrogen-rich carbons as efficient oxygen reduction electrocatalysts for Zn–air batteries

    Z. Liu, J. Liu, H. B. Wu, G. Shen, Z. Le, G. Chen and Y. Lu, Nanoscale, 2018, 10, 16996
    DOI: 10.1039/C8NR04627A

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