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Issue 5, 2019
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Multi-layered zeolitic imidazolate framework based self-templated synthesis of nitrogen-doped hollow porous carbon dodecahedrons as robust substrates for supercapacitors

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Abstract

Many reported synthetic methods for hollow porous carbon dodecahedrons based on a templating strategy are relatively complex, and the obtained hollow structure is usually single shell. Herein, we propose a multi-layered zeolitic imidazolate framework based self-templated synthesis of nitrogen-doped hollow porous carbon dodecahedrons with various architectures such as single-shell, double-shell, yolk–shell and yolk-double-shell. The mechanism of formation of the hollow structure is also demonstrated and it indicates that our strategy can be extended to prepare more multi-shell or yolk-multi-shell nitrogen-doped hollow porous carbon dodecahedrons. All obtained nitrogen-doped hollow porous carbon dodecahedrons are employed as electroactive materials for the construction of supercapacitor electrodes. Owing to their hierarchical micro/mesoporous structure, high nitrogen doping, large surface area, graphitic structure, and the unique yolk-double-shell hollow structure, nitrogen-doped yolk-double-shell hollow porous carbon dodecahedrons (N-YDS-HPCDs) exhibit a distinguished capacitance of 346 F g−1 at a current density of 0.5 A g−1, excellent stability with approximately 93% capacitance retention after 10 000 cycles, and a high energy density of 11.64 W h kg−1 at a power density of 250 W kg−1.

Graphical abstract: Multi-layered zeolitic imidazolate framework based self-templated synthesis of nitrogen-doped hollow porous carbon dodecahedrons as robust substrates for supercapacitors

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Publication details

The article was received on 17 Nov 2018, accepted on 14 Dec 2018 and first published on 17 Dec 2018


Article type: Paper
DOI: 10.1039/C8NJ05842C
Citation: New J. Chem., 2019,43, 2171-2178

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    Multi-layered zeolitic imidazolate framework based self-templated synthesis of nitrogen-doped hollow porous carbon dodecahedrons as robust substrates for supercapacitors

    J. Zhang, L. Liu, G. Qian, Z. Zhou, K. Xiao, S. Cheng, Y. Wang, Y. Liu and Y. Feng, New J. Chem., 2019, 43, 2171
    DOI: 10.1039/C8NJ05842C

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