Performance comparison of NiCo2O4 and NiCo2S4 formed on Ni foam for supercapacitor. (15th August 2017)

• Record Type: Journal Article
• Authors: Jinlong, Lv; Tongxiang, Liang; Meng, Yang; Ken, Suzuki; Hideo, Miura
• Is Part Of: Composites. Number 123(2017)
• Page Start: 28
• Page End: 33
• Publication Date: 2017-08-15
• Subjects: NiCo2S4 -- Hydrothermal process -- Supercapacitors -- Microstructures; Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2017.05.021
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Aligned NiCo2 S4 nanotubes on Ni foam were obtained by the complete sulfidation of NiCo-precursor which was synthetized by hydrothermal process. The NiCo2 S4 nanotubes on Ni foam delivered a higher specific capacitance than NiCo2 O4 nanowires on Ni foam. The NiCo2 S4 nanotubes on Ni foam exhibited the high capacitance of 1936.2 F g −1 at 1 A g −1 . The porous NiCo2 S4 nanotubes on Ni foam provided a huge number of exposed active sites for electrochemical reaction. Moreover, the NiCo2 S4 nanotubes on Ni foam with large specific surface area facilitated the diffusion and penetration of electrolyte and improved electrochemical reaction. Therefore, after 5000 continuous charge–discharge cycles, only about 7.9% degradation in specific capacitance was observed for NiCo2 S4 nanotubes on Ni foam. Highlights: NiCo2 S4 nanotubes on Ni foam were obtained by the complete sulfidation of NiCo2 O4 . NiCo2 S4 nanotubes on Ni foam delivered high capacitance of 1936.2 F g −1 at 1 A g −1 . Porous NiCo2 S4 nanotubes promoted electrochemical reaction for supercapacitor.