Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8046706 | Applied Clay Science | 2014 | 5 Pages |
Abstract
Porous cobalt aluminum layered double hydroxide (CoAl-LDH) nanoflake arrays on nickel foam were synthesized by a facile hydrothermal synthesis method. The obtained CoAl-LDH film consisted of interconnected nanoflakes with the thicknesses of ~Â 20Â nm and showed an extended net-like structure. The electrochemical performance of CoAl-LDH nanoflake arrays was tested by cyclic voltammetry and galvanostatic charge/discharge test. The porous CoAl-LDH nanoflake arrays showed good pseudocapacitive performances with high capacitance and good cycle stability. At room temperature, the porous CoAl-LDH nanoflake arrays exhibited a high specific capacitance of 930Â F/g at 2Â A/g and their specific capacitances were still up to 669Â F/g at 16Â A/g. A good cycling stability was also observed for the CoAl-LDH nanoflake arrays with a capacitance retention of 88.9% of the highest value after 2000Â cycles at 2Â A/g.
Keywords
Related Topics
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Geochemistry and Petrology
Authors
Pan Guoxiang, Xia Xinhui, Luo Jingshan, Cao Feng, Yang Zhihong, Fan Hongjin,