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Issue 23, 2014
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Porous hollow Co3O4 with rhombic dodecahedral structures for high-performance supercapacitors

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Abstract

Porous hollow Co3O4 with rhombic dodecahedral structures were prepared by the calcination of ZIF-67 ([Co(mim)2; mim = 2-methylimidazolate]) rhombic dodecahedral microcrystals. A supercapacitor was successfully constructed by adopting the resulting porous hollow Co3O4 rhombic dodecahedral structure as the electrode material, which showed a large specific capacitance of 1100 F g−1 and retained more than 95.1% of the specific capacitance after 6000 continuous charge–discharge cycles. The excellent capacitive properties and stability mark the porous hollow Co3O4 with the rhombic dodecahedral structure as one of the most promising electrode materials for high-performance supercapacitors.

Graphical abstract: Porous hollow Co3O4 with rhombic dodecahedral structures for high-performance supercapacitors

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Article information


Submitted
19 Aug 2014
Accepted
24 Sep 2014
First published
25 Sep 2014

Nanoscale, 2014,6, 14354-14359
Article type
Paper

Porous hollow Co3O4 with rhombic dodecahedral structures for high-performance supercapacitors

Y. Zhang, Y. Wang, Y. Xie, T. Cheng, W. Lai, H. Pang and W. Huang, Nanoscale, 2014, 6, 14354
DOI: 10.1039/C4NR04782F

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