Shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties

Facile hydrothermal methods have been developed to synthesize large Co3O4 nanocubes, β-Co(OH)2 hexagonal nanodiscs and nanoflowers. Samples are thoroughly characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer−Emmett−Teller method,...

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Main Authors: Chen, Jun Song, Zhu, Ting, Hu, Qiu Hong, Gao, Junjie, Su, Fabing, Qiao, Shi Zhang, Lou, David Xiong Wen
Other Authors: School of Chemical and Biomedical Engineering
Format: Article
Language:English
Published: 2012
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Online Access:https://hdl.handle.net/10356/94948
http://hdl.handle.net/10220/8112
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-949482020-03-07T11:35:34Z Shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties Chen, Jun Song Zhu, Ting Hu, Qiu Hong Gao, Junjie Su, Fabing Qiao, Shi Zhang Lou, David Xiong Wen School of Chemical and Biomedical Engineering DRNTU::Engineering::Chemical engineering::Biochemical engineering Facile hydrothermal methods have been developed to synthesize large Co3O4 nanocubes, β-Co(OH)2 hexagonal nanodiscs and nanoflowers. Samples are thoroughly characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer−Emmett−Teller method, and thermogravimetric analysis. The Co3O4 nanocubes have an average size of about 350 nm with a perfect cubic shape, and the β-Co(OH)2 nanodiscs are uniform hexagonal platelets, whereas the β-Co(OH)2 nanoflowers are assembled from large sheetlike subunits. After thermal annealing in air at a moderate temperature, the as-prepared β-Co(OH)2 samples can be converted into spinel Co3O4 without significant alterations in morphology. We have also investigated the comparative lithium storage properties of these three Co3O4 samples with distinct morphologies. The nanoflower sample shows highly reversible lithium storage capability after 100 charge−discharge cycles. 2012-05-22T07:24:38Z 2019-12-06T19:05:12Z 2012-05-22T07:24:38Z 2019-12-06T19:05:12Z 2010 2010 Journal Article Chen, J. S., Zhu, T., Hu, Q. H., Gao, J., Su, F., Qiao, S. Z., et al. (2010). Shape-Controlled Synthesis of Cobalt-based Nanocubes, Nanodiscs, and Nanoflowers and Their Comparative Lithium-Storage Properties. ACS Applied Materials & Interfaces, 2 (12), 3628–3635. https://hdl.handle.net/10356/94948 http://hdl.handle.net/10220/8112 10.1021/am100787w en ACS applied materials & interfaces © 2010 American Chemical Society.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Chemical engineering::Biochemical engineering
spellingShingle DRNTU::Engineering::Chemical engineering::Biochemical engineering
Chen, Jun Song
Zhu, Ting
Hu, Qiu Hong
Gao, Junjie
Su, Fabing
Qiao, Shi Zhang
Lou, David Xiong Wen
Shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties
description Facile hydrothermal methods have been developed to synthesize large Co3O4 nanocubes, β-Co(OH)2 hexagonal nanodiscs and nanoflowers. Samples are thoroughly characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer−Emmett−Teller method, and thermogravimetric analysis. The Co3O4 nanocubes have an average size of about 350 nm with a perfect cubic shape, and the β-Co(OH)2 nanodiscs are uniform hexagonal platelets, whereas the β-Co(OH)2 nanoflowers are assembled from large sheetlike subunits. After thermal annealing in air at a moderate temperature, the as-prepared β-Co(OH)2 samples can be converted into spinel Co3O4 without significant alterations in morphology. We have also investigated the comparative lithium storage properties of these three Co3O4 samples with distinct morphologies. The nanoflower sample shows highly reversible lithium storage capability after 100 charge−discharge cycles.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Chen, Jun Song
Zhu, Ting
Hu, Qiu Hong
Gao, Junjie
Su, Fabing
Qiao, Shi Zhang
Lou, David Xiong Wen
format Article
author Chen, Jun Song
Zhu, Ting
Hu, Qiu Hong
Gao, Junjie
Su, Fabing
Qiao, Shi Zhang
Lou, David Xiong Wen
author_sort Chen, Jun Song
title Shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties
title_short Shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties
title_full Shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties
title_fullStr Shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties
title_full_unstemmed Shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties
title_sort shape-controlled synthesis of cobalt-based nanocubes, nanodiscs, and nanoflowers and their comparative lithium-storage properties
publishDate 2012
url https://hdl.handle.net/10356/94948
http://hdl.handle.net/10220/8112
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