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Title: Atomic-layer-deposition alumina induced carbon on porous NixCo1−xO nanonets for enhanced pseudocapacitive and Li-ion storage performance
Authors: Guan, Cao
Wang, Yadong
Zacharias, Margit
Wang, John
Fan, Hong Jin
Keywords: Energy storage
Metal oxides
Atomic layer deposition
Issue Date: 2014
Source: 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-.
Series/Report no.: Nanotechnology
Abstract: 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.
ISSN: 0957-4484
DOI: 10.1088/0957-4484/26/1/014001
Schools: School of Physical and Mathematical Sciences 
Rights: © 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: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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