1. A novel synthesis of coral-like Co3O4 nanowires cluster for all-solid-state asymmetric supercapacitors
- Author
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Wei Liu, Huailin Fan, Dong-Hong Wang, Shijie Qu, and Jianyu Gu
- Subjects
Supercapacitor ,Materials science ,Nanowire ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Electrochemistry ,01 natural sciences ,Capacitance ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Electronic, Optical and Magnetic Materials ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,Electrode ,medicine ,Electrical and Electronic Engineering ,0210 nano-technology ,Prepolymer ,Polyurethane ,Activated carbon ,medicine.drug - Abstract
The coral-like Co3O4 nanowires (CNWs) cluster was synthesized by a novel strategy, in which polyurethane (PU) prepolymer was used as soft template during solvothermal process. The diameters of CNWs samples gradually decreased with the increasing of PU prepolymer. Electrochemical measurements showed that the CNWs possessed the largest specific capacitance of 502.6 F g−1, which is 2.2 times higher than that of bulk Co3O4. Moreover, an all-solid-state asymmetric supercapacitor based on CNWs as positive electrode and activated carbon as negative electrode delivered a high energy density of 18.3 Wh kg−1 and good cycling stability.
- Published
- 2018
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