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Preparation and electrochemical performance of hollow activated carbon fiber self-supported electrode for supercapacitor

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Abstract
Hollow activated carbon fiber (HACF) with high specific surface area and high charge storage capability was prepared by pre-oxidation, carbonization and KOH-activation from polyacrylonitrile (PAN). HACF was used as self-supported working electrode directly without any binder and conductive agent. The effect of the activation time on specific surface area of HACF was studied intensively. The results show that the specific surface area of HACF increased with the increase of activation time from 0.5 h to 1.5 h, and then decreased with further increase of activation time. Highest specific surface area of 1873 m(2)g(-1) and micropore volume of 0.61 cm(3)g(-1) were obtained in HACF activated for 1.5 h. Electrochemical properties of HACF can be improved with increase of activation time, but excessive activation results in the decrease of specific surface area and increase of internal resistance of HACF. The self-supported electrode of HACF possesses a large specific capacitance of 323 F g(-1) at 0.05 A g(-1) and 216 F g(-1) at 1 A g(-1). Therefore, HACF can be a promising self-supported electrode for high performance supercapacitors.
Keywords
General Materials Science, Bioengineering, General Chemistry, Condensed Matter Physics, Biomedical Engineering

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MLA
Jiao, Zhenmin, et al. “Preparation and Electrochemical Performance of Hollow Activated Carbon Fiber Self-Supported Electrode for Supercapacitor.” JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, vol. 20, no. 4, 2020, pp. 2316–23.
APA
Jiao, Z., Wu, Q., Cardon, L., & Qiu, J. (2020). Preparation and electrochemical performance of hollow activated carbon fiber self-supported electrode for supercapacitor. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 20(4), 2316–2323.
Chicago author-date
Jiao, Zhenmin, Qianqian Wu, Ludwig Cardon, and Jun Qiu. 2020. “Preparation and Electrochemical Performance of Hollow Activated Carbon Fiber Self-Supported Electrode for Supercapacitor.” JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 20 (4): 2316–23.
Chicago author-date (all authors)
Jiao, Zhenmin, Qianqian Wu, Ludwig Cardon, and Jun Qiu. 2020. “Preparation and Electrochemical Performance of Hollow Activated Carbon Fiber Self-Supported Electrode for Supercapacitor.” JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 20 (4): 2316–2323.
Vancouver
1.
Jiao Z, Wu Q, Cardon L, Qiu J. Preparation and electrochemical performance of hollow activated carbon fiber self-supported electrode for supercapacitor. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY. 2020;20(4):2316–23.
IEEE
[1]
Z. Jiao, Q. Wu, L. Cardon, and J. Qiu, “Preparation and electrochemical performance of hollow activated carbon fiber self-supported electrode for supercapacitor,” JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, vol. 20, no. 4, pp. 2316–2323, 2020.
@article{8628014,
  abstract     = {Hollow activated carbon fiber (HACF) with high specific surface area and high charge storage capability was prepared by pre-oxidation, carbonization and KOH-activation from polyacrylonitrile (PAN). HACF was used as self-supported working electrode directly without any binder and conductive agent. The effect of the activation time on specific surface area of HACF was studied intensively. The results show that the specific surface area of HACF increased with the increase of activation time from 0.5 h to 1.5 h, and then decreased with further increase of activation time. Highest specific surface area of 1873 m(2)g(-1) and micropore volume of 0.61 cm(3)g(-1) were obtained in HACF activated for 1.5 h. Electrochemical properties of HACF can be improved with increase of activation time, but excessive activation results in the decrease of specific surface area and increase of internal resistance of HACF. The self-supported electrode of HACF possesses a large specific capacitance of 323 F g(-1) at 0.05 A g(-1) and 216 F g(-1) at 1 A g(-1). Therefore, HACF can be a promising self-supported electrode for high performance supercapacitors.},
  author       = {Jiao, Zhenmin and Wu, Qianqian and Cardon, Ludwig and Qiu, Jun},
  issn         = {1533-4880},
  journal      = {JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY},
  keywords     = {General Materials Science,Bioengineering,General Chemistry,Condensed Matter Physics,Biomedical Engineering},
  language     = {eng},
  number       = {4},
  pages        = {2316--2323},
  title        = {Preparation and electrochemical performance of hollow activated carbon fiber self-supported electrode for supercapacitor},
  url          = {http://dx.doi.org/10.1166/jnn.2020.17363},
  volume       = {20},
  year         = {2020},
}

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