Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7990519 | Journal of Alloys and Compounds | 2018 | 31 Pages |
Abstract
Low cost mass production of Ni-based composites on an industrial scale with high electrochemical performance is of practical interest for supercapacitors. In this report, various Ni-based composites containing Ni2(CO3)(OH)2, Ni3(NO3)2(OH)4, NiC2O4 or NiO have been successfully synthesized via a one-step salt-assisted solution combustion synthesis at a temperature of 215â¯Â°C. The morphology and chemical composition of the as-obtained products can be controlled by monitoring the reaction parameters inclusive of the initial concentration of salt solution, and salt species. NC-1.0 composite obtained by salt-assisted solution combustion synthesis delivers higher specific capacitance (1420â¯Fâ¯gâ1 at 1â¯Aâ¯gâ1), and better cycling performance (60.0% after 2000 cycles) than those of NC-0.0 (1260â¯Fâ¯gâ1 at 1â¯Aâ¯gâ1, 53.6% after 2000 cycles) achieved by conventional solution combustion synthesis. Hybrid supercapacitor with NC-1.0 composite as positive electrode and active carbon as negative electrode delivers high energy density (32.5â¯Wh kgâ1 at a power density of 310.2â¯Wâ¯kgâ1). The performance of the obtained Ni-based composites as supercapacitor electrodes demonstrates their potential for upcoming electronic devices.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Yingyuan Zhao, Nian Jiang, Xu Zhang, Jing Guo, Qiyue Yang, Liguo Gao, Yanqing Li, Tingli Ma,