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论文类型：期刊论文

发表时间：2018-09-15

发表刊物：Materials Chemistry and Physics

收录刊物：SCIE

卷号：217

页面范围：291-299

ISSN号：0254-0584

关键字：Ni-3(NO3)(2)(OH)(4); Composite; Solution combustion synthesis; Supercapacitor

摘要：In this study, we report a series of carbon/nickel-based composites. The composites are prepared through a facile one-pot solution combustion method by using nickel nitrate hydrate (Ni(NO3)(2)center dot 6H(2)O) as an oxidizer and glucose (C6H12O6) as a fuel material. The phase, component and electrochemical capacitive behavior of the as-prepared samples are investigated. The component of the obtained composites could be simply controlled by changing the ratio of NO3-/C6H12O6. Novel C/Ni-3(NO3)(2)(OH)(4) composites are obtained at high molar ratio of NO3-/C6H12O6 (larger than 9) for the first time. The as-prepared C/Ni-3(NO3)(2)(OH)(4) composite shows battery-type behavior and exhibits a specific capacity of 630 C g(-1) (1260 F g(-1)) at the current density of 1 A g(-1), which is ca. 2-10 fold higher than those of C/NiO composite (414 C g(-1), 828 F g(-1)) and C/NiO/Ni composite (65 C g(-1), 129 F g(-1)). In addition, C/Ni-3(NO3)(2)(OH)(4) composite exhibits an excellent rate performance (448 C g(-1), 996 F g(-1) at 10 A g(-1)) and good cyclic stability. The results indicate that the C/Ni-3(NO3)(2)(OH)(4) composite is a potential electrode material for electrochemical supercapacitor. This work also suggests that the solution combustion process is promising for large-scale production of materials for supercapacitors.