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- Title
Synthesis of ordered mesoporous carbon nanofiber arrays/nickel-boron amorphous alloy with high electrochemical performance for supercapacitor.
- Authors
Tan, Yueyue; Zhang, Wei; Gao, Yilong; Wu, Jianxiang; Tang, Bohejin
- Abstract
In this paper, the ordered mesoporous carbon nanofiber arrays (MCNAs), Nickel-Boron (Ni-B) amorphous alloys, and amorphous Ni-B/MCNAs composite for supercapacitor material have been successfully fabricated by a combination of templating method and chemical reduction process. The porous structure and large specific surface area (1270 m g) of MCNAs favor the utilization of the active material Ni-B amorphous alloys and interfacial charge transport, and provide short diffusion paths for ions. X-ray diffraction, small-angle X-ray scattering, inductively coupled plasma. Transmission electron micrographs and selected area electronic diffraction were taken to characterize the structure of the ordered MCNAs, Ni-B amorphous alloy, and amorphous Ni-B/MCNAs. Electrochemical properties are characterized by cyclic voltammetry, galvanostatic charge/discharge measurements, and electrochemical impedance spectroscopy. The results show that the amorphous Ni-B/MCNAs display superior capacitive performance (733 F g) over Ni-B amorphous alloys (562 F g) at a scan rate of 5 mV s and a good cycling stability after 1000 cycles.
- Subjects
MESOPOROUS materials; ELECTROCHEMICAL analysis; SUPERCAPACITORS; CARBON nanofibers; AMORPHOUS alloys; CHEMICAL reduction
- Publication
Journal of Materials Science, 2015, Vol 50, Issue 13, p4622
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-015-9012-2