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Issue 5, 2011
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Crystal-match guided formation of single-crystal tricobalt tetraoxygen nanomesh as superior anode for electrochemical energy storage

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Abstract

In this article, we introduce a novel two-dimensional (2D) functional Co3O4 nanostructure, “nanomesh”, which possesses the highest surface area (382 m2 g−1) as compared to the other Co3O4 nanostructures, well-crystallized features, thickness of no more than 10 nm and a void space diameter below 6.0 nm. These structural characteristics of the nanomesh are well-suited for lithium-ion battery (LIBs) applications. In initial tests, high specific capacity (1800 mAh/g), good rate capability (above 380 mAh/g at a discharging rate of 1000 mA g−1 over 50 cycles) and stable cyclability (up to 100 cycles) have been demonstrated. In addition, the dominant ([1 with combining macron]12) crystal plane in the nanomesh has much higher surface energy than the conventional (111) and (100) crystal planes, leading to higher activity in supercapacitors. The Co3O4 nanomesh demonstrated in this research could be successfully utilized in energy and environmental applications, such as selective catalysis, gene delivery and gas or biological sensing, besides the application in electrochemical energy storage shown in this work. More importantly, the synthesis strategy used in this research can possibly be extended to other material systems as a general approach to fabricate 2D mesoporous oxides.

Graphical abstract: Crystal-match guided formation of single-crystal tricobalt tetraoxygen nanomesh as superior anode for electrochemical energy storage

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Publication details

The article was received on 22 Dec 2010, accepted on 10 Mar 2011 and first published on 09 Apr 2011


Article type: Paper
DOI: 10.1039/C0EE00802H
Citation: Energy Environ. Sci., 2011,4, 1845-1854
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    Crystal-match guided formation of single-crystal tricobalt tetraoxygen nanomesh as superior anode for electrochemical energy storage

    Y. Wang, H. J. Zhang, J. Wei, C. C. Wong, J. Lin and A. Borgna, Energy Environ. Sci., 2011, 4, 1845
    DOI: 10.1039/C0EE00802H

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