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https://hdl.handle.net/10356/101924
Title: | Porous hydroxide nanosheets on preformed nanowires by electrodeposition : branched nanoarrays for electrochemical energy storage | Authors: | Xia, Xinhui Tu, Jiangping Zhang, Yongqi Chen, Jiao Wang, Xiuli Gu, Changdong Guan, Cao Luo, Jingshan Fan, Hong Jin |
Issue Date: | 2012 | Source: | Xia, X., Tu, J., Zhang, Y., Chen, J., Wang, X., Gu, C., et al. (2012). Porous hydroxide nanosheets on preformed nanowires by electrodeposition : branched nanoarrays for electrochemical energy storage. Chemistry of Materials, 24(19), 3793-3799. | Series/Report no.: | Chemistry of materials | Abstract: | Fast, high-yield, and controllable synthesis of functional hydroxide and oxide nanomaterials on conductive substrates is highly desirable for the energy generation and storage applications. For the same purpose, three-dimensional hierarchical porous nanostructures are being regarded advantageous. In this work, we report the fabrication of porous metal hydroxide nanosheets on a preformed nanowires scaffold using the fast and well-controllable electrodeposition method. Co(OH)2 and Mn(OH)2 nanosheets are electrochemically deposited on the Co3O4 core nanowires to form core/shell arrays. Such oxide/hydroxide core/shell nanoarrays can be realized on various conductive substrates. The Co3O4/Co(OH)2 core/shell nanowire arrays are evaluated as a supercapacitor cathode material that exhibits high specific capacitances of 1095 F/g at 1 A/g and 812 F/g at 40 A/g, respectively. The mesoporous homogeneous Co3O4 core/shell nanowire arrays, obtained by annealing the Co3O4/Co(OH)2 sample, are applied as the anode material for lithium ion batteries. A high capacity of 1323 mAh/g at 0.5 C and excellent cycling stability are demonstrated. Our results show that electrodeposition is a versatile technique for fabrication of nanometal oxides on 3-D templates for electrochemical energy applications. | URI: | https://hdl.handle.net/10356/101924 http://hdl.handle.net/10220/11156 |
DOI: | 10.1021/cm302416d | Schools: | School of Physical and Mathematical Sciences | Rights: | © 2012 American Chemical Society. | Fulltext Permission: | none | Fulltext Availability: | No Fulltext |
Appears in Collections: | SPMS Journal Articles |
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