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Interconnected meso/microporous carbon derived from pumpkin seeds as an efficient electrode material for supercapacitors KCI 등재

  • 언어ENG
  • URLhttps://db.koreascholar.com/Article/Detail/347753
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Carbon Letters (Carbon letters)
한국탄소학회 (Korean Carbon Society)
초록

Interconnected meso/microporous activated carbons were prepared from pumpkin seeds using a simple chemical activation method. The porous carbon materials were prepared at different temperatures (PS-600, PS-700, PS-800, and PS-900) and demonstrated huge surface areas (645–2029 m2 g–1) with excellent pore volumes (0.27–1.30 cm3 g–1). The wellcondensed graphitic structure of the prepared activated carbon materials was confirmed by Raman and X-ray diffraction analyses. The presence of heteroatoms (O and N) in the carbon materials was confirmed by X-ray photoemission spectroscopy. High resolution transmission electron microscopic images and selected area diffraction patters further revealed the porous structure and amorphous nature of the prepared electrode materials. The resultant porous carbons (PS-600, PS-700, PS-800, and PS-900) were utilized as electrode material for supercapacitors. To our delight, the PS-900 demonstrated a maximum specific capacitance (Cs) of 303 F g–1 in 1.0 M H2SO4 at a scan rate of 5 mV. The electrochemical impedance spectra confirmed the poor electrical resistance of the electrode materials. Moreover, the stability of the PS-900 was found to be excellent (no significant change in the Cs even after 6000 cycles).

목차
Abstract
 1. Introduction
 2. Experimental
  2.1. Materials
  2.2. Preparation of electrode materials
  2.3. Characterization
  2.4. Electrochemical measurements
 3. Results and Discussion
  3.1. Characterization of the electrode materials
  3.2. Electrochemical performance
  3.3. Cycle stability
 4. Conclusions
 Conflict of Interest
 Acknowledgements
 References
저자
  • Mayakrishnan Gopiraman(Department of Applied Bioscience, College of Life & Environment Science, Konkuk University)
  • Somasundaram Saravanamoorthy(Department of Chemistry, National Institute of Technology)
  • Seung-Hyun Kim(Department of Applied Bioscience, College of Life & Environment Science, Konkuk University)
  • Ill-Min Chung(Department of Applied Bioscience, College of Life & Environment Science, Konkuk University) Corresponding Author
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