A high performance hybrid asymmetric supercapacitor via nano-scale morphology control of graphene, conducting polymer, and carbon nanotube electrodes

Yue Zhou, Noa Lachman, Mehdi Ghaffari, Haiping Xu, Dhiman Bhattacharya, Pouria Fattahi, Mohammad Reza Abidian, Shan Wu, Karen K. Gleason, Brian L. Wardle, Q. M. Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

An asymmetric supercapacitor, exploiting ultra-high density aligned activated graphene flakes as the positive electrode and nm-scale conformal coating of a conducting polymer poly(ethylenedioxythiophene) on aligned carbon nanotubes as the negative electrode, is introduced. By complementary tailoring of the asymmetric electrodes, the layered device exhibits a wide 4 V electrochemical window, with the highest power density (149 kW L-1) and energy density (113 Wh L-1) reported thus far for carbon-based supercapacitors. 2014 This journal is

Original languageEnglish
Pages (from-to)9964-9969
Number of pages6
JournalJournal of Materials Chemistry A
Volume2
Issue number26
DOIs
StatePublished - 14 Jul 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Materials Science
  • Renewable Energy, Sustainability and the Environment

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