Architecturing carbon nanotube-based flexible solid state supercapacitor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report preliminary investigation of an all-solid-state electrochemical double layer capacitor using single wall carbon nanotube electrodes and polymer electrolyte. Binder free single walled carbon nanotubes were self-assembled to form a highly dense 20 μm thick carbon nanotube electrode to be used in electrochemical capacitors. Fabrication of symmetric nanotube capacitors using these electrodes and highly ionically conducting polyvinyl alcohol based hydrogel membranes soaked in aqueous sulfuric acid resulted in a capacitor with power density as high as 1040 KW/kg based on mass of both the electrodes. The time constant of the assembled capacitor was ∼ 15 ms and was dependent on the concentration of sulfuric acid. The capacitors showed no degradation in performance even after 10,000 cycles. The charge/discharge measurements at temperatures from 20°C to 80°C showed a linear increase with increasing temperature. However, at temperatures above 80°C, we observed a decrease in the specific capacitance.

Original languageEnglish (US)
Title of host publicationTechnical Proceedings of the 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014
PublisherNano Science and Technology Institute
Pages464-467
Number of pages4
ISBN (Print)9781482258301
StatePublished - Jan 1 2014
EventNanotechnology 2014: Electronics, Manufacturing, Environment, Energy and Water - 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014 - Washington, DC, United States
Duration: Jun 15 2014Jun 18 2014

Publication series

NameTechnical Proceedings of the 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014
Volume3

Other

OtherNanotechnology 2014: Electronics, Manufacturing, Environment, Energy and Water - 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014
CountryUnited States
CityWashington, DC
Period6/15/146/18/14

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All Science Journal Classification (ASJC) codes

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Adu, K., Ma, D., Rajagopalan, R., & Randall, C. (2014). Architecturing carbon nanotube-based flexible solid state supercapacitor. In Technical Proceedings of the 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014 (pp. 464-467). (Technical Proceedings of the 2014 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2014; Vol. 3). Nano Science and Technology Institute.