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Updated: Nov 27, 2025

Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
Published on: February 19, 2018
Improved chemical precipitation prepared rapidly NiCo2S4 with high specific capacitance for supercapacitors
Jibin Tang1, Wanxia Huang1, Xiang Lv1
1College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, People's Republic of China.
Abstract:
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.
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