Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 4, Issue 42, Pages 16635-16644Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta06755g
Keywords
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Funding
- Natural Science Foundation of China [51172058, 51472066, 51402076, 11504097]
- Institution of Higher Education Doctoral Fund Jointly Funded Project [20112329110001]
- Youth Academic Elite funded projects of Harbin Normal University [XKB201312]
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The development of a negative electrode for supercapacitors is very critical for the next-generation of energy-storage devices while it remains a great challenge. Herein, a flexible and free-standing nanocomposite electrode of Bi2O3-decorated electrospun carbon nanofibers (ESCNFs) was prepared via electrospinning technology and a simple solvothermal method. The electrochemical performance of the nanocomposite electrode was investigated. An asymmetric supercapacitor (ASC) device made of the ESCNF@Bi2O3 negative electrode and CF@NiCo2O4 positive electrode was developed. It achieved excellent electrochemical properties including high energy density, high power density, and outstanding cycling stability. Moreover, the ability to power light-emitting diodes also indicates the feasibility for practical use. This work holds great promise for developing next-generation supercapacitors with high energy density.
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