Synthesis of porous NiS nanoflake arrays by ion exchange reaction from NiO and their high performance supercapacitor properties
| Autor: | Xiaoyan Yan, Yuming Tian, Xili Tong, Lei Ma, Changwei Gong, Liang Liping, Yuesheng Cai, Mingang Zhang |
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| Rok vydání: | 2014 |
| Předmět: |
Supercapacitor
Materials science Nickel sulfide Mechanical Engineering Non-blocking I/O Nanotechnology Condensed Matter Physics Electrochemistry Capacitance Cathode law.invention chemistry.chemical_compound chemistry Mechanics of Materials law General Materials Science Thin film Chemical bath deposition |
| Zdroj: | Materials Letters. 124:133-136 |
| ISSN: | 0167-577X |
| DOI: | 10.1016/j.matlet.2014.03.067 |
| Popis: | Metal sulfides have emerged as a new class of promising active material for supercapacitors. Porous NiS nanoflake arrays are successfully synthesized by a facile solution-based ion exchange reaction (IER) method based on preformed chemical bath deposition (CBD) derived NiO nanoflake arrays. NiS nanoflake arrays preserve the morphology of precursor-NiO nanoflake arrays and grow vertically to the substrates. As cathode of supercapacitors, NiS nanoflake arrays exhibit outstanding electrochemical performances with a high specific capacitance of 718 F g −1 at 2 A g −1 and good cycle performance and capacity retention (593 F g −1 after 3000 cycles at 2 A g −1 ). |
| Databáze: | OpenAIRE |
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