Skip to main content
main-content

Tipp

Weitere Artikel dieser Ausgabe durch Wischen aufrufen

07.11.2019 | Original Article

Superior supercapacitance behavior of oxygen self-doped carbon nanospheres: a conversion of Allium cepa peel to energy storage system

Zeitschrift:
Biomass Conversion and Biorefinery
Autoren:
Gomaa A. M. Ali, S. Supriya, Kwok Feng Chong, Essam R. Shaaban, H. Algarni, T. Maiyalagan, Gurumurthy Hegde
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s13399-019-00520-3) contains supplementary material, which is available to authorized users.

Highlights

• Mesoporous carbon nanospheres are produced from Allium cepa dry peels.
• The materials have a nanosphere morphology with particles size of ~60 nm and surface area of 2962 m2 g−1.
• An excellent supercapacitor performance of the carbon nanospheres was observed.
• The materials showed a high cyclic stability of 78% and coulombic efficiency of 90% over 4500 cycles.
• Symmetric supercapacitor showed a high energy density of 22.1 Wh kg−1 within 1.7 V.
Gomaa A. M. Ali and Supriya S contributed equally towards the manuscript.

Publisher’s Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Abstract

Mesoporous carbon nanospheres are produced from biowaste, Allium cepa peels, well known as “onion” dry peels using the catalyst-free pyrolysis method. The synthesis process involves an unusable bio-precursor that is accumulated in millions of tons per year. The obtained materials show nanosphere morphology with particles size of 63–66 nm and surface area up to 2962 m2 g−1. After pyrolysis at 800, 900, and 1000 °C, the carbon nanospheres are directly applied for supercapacitance study without further activation processes. The electrochemical studies show promising results such as high electrode capacitance of 189.4 at 0.1 A g−1 in 3 M KOH. Moreover, full cell symmetrical supercapacitor is fabricated and further investigated under a wide potential window up to 1.6 V. An excellent electrochemical behavior is observed for the supercapacitor in terms of high energy density of 22.1 Wh kg−1 at a power density of 39.6 W kg−1, high cyclic stability of 78%, and high coulombic efficiency of 90% over 4500 cycles at 0.5 A g−1. These studies support carbon nanospheres obtained from Allium cepa wastes to be used as promising materials for supercapacitor application.

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

Sie möchten Zugang zu diesem Inhalt erhalten? Dann informieren Sie sich jetzt über unsere Produkte:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 69.000 Bücher
  • über 500 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Testen Sie jetzt 30 Tage kostenlos.

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 50.000 Bücher
  • über 380 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Umwelt
  • Maschinenbau + Werkstoffe




Testen Sie jetzt 30 Tage kostenlos.

Zusatzmaterial
Literatur
Über diesen Artikel