| Autor: |
Tang, Jibin, Huang, Wanxia, Lv, Xiang, Shi, Qiwu |
| Předmět: |
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| Zdroj: |
Nanotechnology; 2/19/2021, Vol. 32 Issue 8, p1-9, 9p |
| Abstrakt: |
In this work, rapid chemical precipitation assisted annealing method is used to prepare flower-like NiCo2S4. And the flower-like structure after polyethylene glycol (PEG) modification yields an excellent specific capacitance (2198.9 F g−1 at 1 A g−1). And an asymmetric supercapacitor assembled with NiCo2S4 (PEG-modified) and activated carbon (AC) shows an energy density of 38.2 Wh kg−1 at 400 W kg−1, and outstanding stability (80% remained after 3000 cycles at 5 A g−1). Benefited by a larger specific surface area and suitable pore size of the aggregate structure, the specific capacitance of prepared NiCo2S4 is increased by about 2 times. This uncomplicated preparation method is proved to be suitable for NiCo2S4 with a high specific capacitance of supercapacitors. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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