Nano Research

, Volume 3, Issue 6, pp 452–458

Aqueous supercapacitors on conductive cotton

Authors

  • Mauro Pasta
    • Dipartimento di Chimica Inorganica, Metallorganica e Analitica “Lamberto Malatesta”Università degli Studi di Milano
    • Department of Materials Science and EngineeringStanford University
  • Fabio La Mantia
    • Department of Materials Science and EngineeringStanford University
  • Liangbing Hu
    • Department of Materials Science and EngineeringStanford University
  • Heather Dawn Deshazer
    • Department of Materials Science and EngineeringStanford University
    • Department of Materials Science and EngineeringStanford University
Open AccessResearch Article

DOI: 10.1007/s12274-010-0006-8

Cite this article as:
Pasta, M., La Mantia, F., Hu, L. et al. Nano Res. (2010) 3: 452. doi:10.1007/s12274-010-0006-8

Abstract

Wearable electronics offer the combined advantages of both electronics and fabrics. In this article, we report the fabrication of wearable supercapacitors using cotton fabric as an essential component. Carbon nanotubes are conformally coated onto the cotton fibers, leading to a highly electrically conductive interconnecting network. The porous carbon nanotube coating functions as both active material and current collector in the supercapacitor. Aqueous lithium sulfate is used as the electrolyte in the devices, because it presents no safety concerns for human use. The supercapacitor shows high specific capacitance (˜70–80 F·g−1 at 0.1 A·g−1) and cycling stability (negligible decay after 35,000 cycles). The extremely simple design and fabrication process make it applicable for providing power in practical electronic devices.

Keywords

Supercapacitorwearable electronicsenergy storagecarbon nanotubes
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Copyright information

© Tsinghua University Press and Springer-Verlag Berlin Heidelberg 2010