Atomic-layer-deposition alumina induced carbon on porous NixCo1−xO nanonets for enhanced pseudocapacitive and Li-ion storage performance
A unique composite nanonet of metal oxide@carbon interconnected sheets is obtained by atomic layer deposition (ALD)-assisted fabrication. In this nanonet structure, mesoporous metal oxide nanosheets are covered by a layer of amorphous carbon nanoflakes. Specifically, quasi-vertical aligned and mesop...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2016
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| Online Access: | https://hdl.handle.net/10356/81921 http://hdl.handle.net/10220/39746 |
| _version_ | 1826130191560212480 |
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| author | Guan, Cao Wang, Yadong Zacharias, Margit Wang, John Fan, Hong Jin |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Guan, Cao Wang, Yadong Zacharias, Margit Wang, John Fan, Hong Jin |
| author_sort | Guan, Cao |
| collection | NTU |
| description | A unique composite nanonet of metal oxide@carbon interconnected sheets is obtained by atomic layer deposition (ALD)-assisted fabrication. In this nanonet structure, mesoporous metal oxide nanosheets are covered by a layer of amorphous carbon nanoflakes. Specifically, quasi-vertical aligned and mesoporous NixCo1−xO nanosheets are first fabricated directly on nickel foam substrates by a hydrothermal method. Then, an ALD-enabled carbon coating method is applied for the growth of carbon nanoflakes on the surface of the nanosheets. The thus formed 3D hierarchical structure of NixCo1−xO@carbon composite flakes have a higher surface area, better electrical conductivity and structure stability than the bare NixCo1−xO. The application of such composite nanomaterials is demonstrated as electrodes for a supercapacitor and a lithium-ion battery. In both tests, the composite electrode shows enhancement in capacity and cycling stability. This effective composite nanostructure design of metal oxides@carbon flakes could provide a promising method to construct high-performance materials for energy and environment applications. |
| first_indexed | 2024-10-01T07:52:26Z |
| format | Journal Article |
| id | ntu-10356/81921 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:52:26Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-10356/819212023-02-28T19:22:27Z Atomic-layer-deposition alumina induced carbon on porous NixCo1−xO nanonets for enhanced pseudocapacitive and Li-ion storage performance Guan, Cao Wang, Yadong Zacharias, Margit Wang, John Fan, Hong Jin School of Physical and Mathematical Sciences Energy storage Carbon Metal oxides Atomic layer deposition A unique composite nanonet of metal oxide@carbon interconnected sheets is obtained by atomic layer deposition (ALD)-assisted fabrication. In this nanonet structure, mesoporous metal oxide nanosheets are covered by a layer of amorphous carbon nanoflakes. Specifically, quasi-vertical aligned and mesoporous NixCo1−xO nanosheets are first fabricated directly on nickel foam substrates by a hydrothermal method. Then, an ALD-enabled carbon coating method is applied for the growth of carbon nanoflakes on the surface of the nanosheets. The thus formed 3D hierarchical structure of NixCo1−xO@carbon composite flakes have a higher surface area, better electrical conductivity and structure stability than the bare NixCo1−xO. The application of such composite nanomaterials is demonstrated as electrodes for a supercapacitor and a lithium-ion battery. In both tests, the composite electrode shows enhancement in capacity and cycling stability. This effective composite nanostructure design of metal oxides@carbon flakes could provide a promising method to construct high-performance materials for energy and environment applications. ASTAR (Agency for Sci., Tech. and Research, S’pore) Accepted version 2016-01-22T01:41:07Z 2019-12-06T14:43:07Z 2016-01-22T01:41:07Z 2019-12-06T14:43:07Z 2014 Journal Article Guan, C., Wang, Y., Zacharias, M., Wang, J., & Fan, H. J. (2015). Atomic-layer-deposition alumina induced carbon on porous NixCo1−xO nanonets for enhanced pseudocapacitive and Li-ion storage performance. Nanotechnology, 26(1), 014001-. 0957-4484 https://hdl.handle.net/10356/81921 http://hdl.handle.net/10220/39746 10.1088/0957-4484/26/1/014001 en Nanotechnology © 2015 IOP Publishing Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Nanotechnology, IOP Publishing Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1088/0957-4484/26/1/014001]. 11 p. application/pdf |
| spellingShingle | Energy storage Carbon Metal oxides Atomic layer deposition Guan, Cao Wang, Yadong Zacharias, Margit Wang, John Fan, Hong Jin Atomic-layer-deposition alumina induced carbon on porous NixCo1−xO nanonets for enhanced pseudocapacitive and Li-ion storage performance |
| title | Atomic-layer-deposition alumina induced carbon on porous NixCo1−xO nanonets for enhanced pseudocapacitive and Li-ion storage performance |
| title_full | Atomic-layer-deposition alumina induced carbon on porous NixCo1−xO nanonets for enhanced pseudocapacitive and Li-ion storage performance |
| title_fullStr | Atomic-layer-deposition alumina induced carbon on porous NixCo1−xO nanonets for enhanced pseudocapacitive and Li-ion storage performance |
| title_full_unstemmed | Atomic-layer-deposition alumina induced carbon on porous NixCo1−xO nanonets for enhanced pseudocapacitive and Li-ion storage performance |
| title_short | Atomic-layer-deposition alumina induced carbon on porous NixCo1−xO nanonets for enhanced pseudocapacitive and Li-ion storage performance |
| title_sort | atomic layer deposition alumina induced carbon on porous nixco1 xo nanonets for enhanced pseudocapacitive and li ion storage performance |
| topic | Energy storage Carbon Metal oxides Atomic layer deposition |
| url | https://hdl.handle.net/10356/81921 http://hdl.handle.net/10220/39746 |
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