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

    33 Scopus citations

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

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Renewable Energy, Sustainability and the Environment
    • Materials Science(all)

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