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Issue 19, 2017
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Ball-in-cage nanocomposites of metal–organic frameworks and three-dimensional carbon networks: synthesis and capacitive performance

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Abstract

In order to improve the electrical conductivity of metal–organic frameworks (MOFs) which have drawn remarkable attention owing to their potential application in the energy storage field, a Co-based zeolitic imidazolate framework (ZIF-67) polyhedron was in situ integrated into a three-dimensional carbon network (3DCN) to construct a Ball-in-Cage (BIC) nanostructure. The introduced 3DCN acting as the electronic pathway can provide nucleation sites for MOF particles; consequently, further growth of the MOF particles is limited by the size effect of 3DCN. The BIC frame not only controls the MOF particle size, but also ensures a high electron conductivity of the entire structure. The as-prepared BIC electrode displays an outstanding capacitance of 119 F g−1 at a current density of 0.5 A g−1 and a great rate performance as well, which can be expected to be a promising approach to enhance the electrochemical performance of pristine MOFs in the future.

Graphical abstract: Ball-in-cage nanocomposites of metal–organic frameworks and three-dimensional carbon networks: synthesis and capacitive performance

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The article was received on 03 Mar 2017, accepted on 12 Apr 2017 and first published on 13 Apr 2017


Article type: Paper
DOI: 10.1039/C7NR01548H
Citation: Nanoscale, 2017,9, 6478-6485
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    Ball-in-cage nanocomposites of metal–organic frameworks and three-dimensional carbon networks: synthesis and capacitive performance

    X. Deng, S. Zhu, J. Li, L. Ma, F. He, E. Liu, C. He, C. Shi, Q. Li and N. Zhao, Nanoscale, 2017, 9, 6478
    DOI: 10.1039/C7NR01548H

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