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Litchi-like porous Fe/N/C spheres with atomically dispersed FeNx promoted by sulfur as highly efficient oxygen electrocatalysts for Zn–air batteries

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Abstract

The fabrication of carbon-based electrocatalysts that are highly active and stable as well as with plenty of pores for mass transport is essential for high-performance metal–air batteries. Herein, a new simple route involving sulfur (S) as a “promoter” was developed to achieve a litchi-like porous Fe/N/C catalyst with abundant FeNx species. The obtained electrocatalyst exhibits a large surface area with a high pore volume and shows high activity for oxygen reduction. Moreover, a Zn–air battery device adopting this S-promoted litchi-like Fe/N/C catalyst shows superior power density (double that of the untreated counterpart).

Graphical abstract: Litchi-like porous Fe/N/C spheres with atomically dispersed FeNx promoted by sulfur as highly efficient oxygen electrocatalysts for Zn–air batteries

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Publication details

The article was received on 04 Oct 2017, accepted on 12 Dec 2017 and first published on 12 Dec 2017


Article type: Communication
DOI: 10.1039/C7TA08746B
Citation: J. Mater. Chem. A, 2018, Advance Article
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    Litchi-like porous Fe/N/C spheres with atomically dispersed FeNx promoted by sulfur as highly efficient oxygen electrocatalysts for Zn–air batteries

    Q. Wei, G. Zhang, X. Yang, Y. Fu, G. Yang, N. Chen, W. Chen and S. Sun, J. Mater. Chem. A, 2018, Advance Article , DOI: 10.1039/C7TA08746B

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