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,...
| Main Authors: | , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2012
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/94948 http://hdl.handle.net/10220/8112 |
| _version_ | 1824454190271823872 |
|---|---|
| author | Chen, Jun Song Zhu, Ting Hu, Qiu Hong Gao, Junjie Su, Fabing Qiao, Shi Zhang Lou, David Xiong Wen |
| 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 |
| author_sort | Chen, Jun Song |
| collection | NTU |
| 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. |
| first_indexed | 2025-02-19T03:18:22Z |
| format | Journal Article |
| id | ntu-10356/94948 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:18:22Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | ntu-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. |
| 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 |
| title | 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_short | 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 |
| topic | DRNTU::Engineering::Chemical engineering::Biochemical engineering |
| url | https://hdl.handle.net/10356/94948 http://hdl.handle.net/10220/8112 |
| work_keys_str_mv | AT chenjunsong shapecontrolledsynthesisofcobaltbasednanocubesnanodiscsandnanoflowersandtheircomparativelithiumstorageproperties AT zhuting shapecontrolledsynthesisofcobaltbasednanocubesnanodiscsandnanoflowersandtheircomparativelithiumstorageproperties AT huqiuhong shapecontrolledsynthesisofcobaltbasednanocubesnanodiscsandnanoflowersandtheircomparativelithiumstorageproperties AT gaojunjie shapecontrolledsynthesisofcobaltbasednanocubesnanodiscsandnanoflowersandtheircomparativelithiumstorageproperties AT sufabing shapecontrolledsynthesisofcobaltbasednanocubesnanodiscsandnanoflowersandtheircomparativelithiumstorageproperties AT qiaoshizhang shapecontrolledsynthesisofcobaltbasednanocubesnanodiscsandnanoflowersandtheircomparativelithiumstorageproperties AT loudavidxiongwen shapecontrolledsynthesisofcobaltbasednanocubesnanodiscsandnanoflowersandtheircomparativelithiumstorageproperties |