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Issue 34, 2017
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Temperature-directed growth of highly pyridinic nitrogen doped, graphitized, ultra-hollow carbon frameworks as an efficient electrocatalyst for the oxygen reduction reaction

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Abstract

We report here the successful synthesis of highly pyridinic nitrogen doped, graphitized, ultra-hollow carbon frameworks (N-HCF-Ts, where T stands for the carbonization temperature) via a template-free temperature-directed growth route, using dicyandiamide and glucose as precursors. N-HCF-Ts have ultra high pyridinic nitrogen contents (up to 14.9 wt%), abundant meso–macropores, large specific surface areas (897–1434 m2 g−1), and ultra large pore volumes (4.47–8.47 cm3 g−1). The structural characteristics of the ultra high pyridinic nitrogen sites, abundant meso–macropores, and graphitized and ultra-hollow frameworks make N-HCF-Ts highly efficient and stable electrocatalysts for the oxygen reduction reaction. The most positive reduction potential was evident for N-HCF-900 at 0.83 V (vs. the RHE), which is even comparable to that of commercial (20 wt%) Pt/C and much better than those of most of the various nitrogen doped carbon-based metal-free electrocatalysts.

Graphical abstract: Temperature-directed growth of highly pyridinic nitrogen doped, graphitized, ultra-hollow carbon frameworks as an efficient electrocatalyst for the oxygen reduction reaction

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Publication details

The article was received on 29 May 2017, accepted on 20 Jul 2017 and first published on 31 Jul 2017


Article type: Paper
DOI: 10.1039/C7TA04685E
Citation: J. Mater. Chem. A, 2017,5, 18064-18070
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    Temperature-directed growth of highly pyridinic nitrogen doped, graphitized, ultra-hollow carbon frameworks as an efficient electrocatalyst for the oxygen reduction reaction

    B. He, F. Liu and S. Yan, J. Mater. Chem. A, 2017, 5, 18064
    DOI: 10.1039/C7TA04685E

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