High electromechanical response of ionic polymer actuators with controlled-morphology aligned carbon nanotube/nafi on nanocomposite electrodes

Sheng Liu, Yang Liu, Hülya Cebeci, Roberto Guzmán De Villoria, Jun Hong Lin, Brian L. Wardle, Q. M. Zhang

    Research output: Contribution to journalArticle

    105 Scopus citations

    Abstract

    Recent advances in fabricating controlled-morphology vertically aligned carbon nanotubes (VA-CNTs) with ultrahigh volume fraction create unique opportunities for markedly improving the electromechanical performance of ionic polymer conductor network composite (IPCNC) actuators. Continuous paths through inter-VA-CNT channels allow fast ion transport, and high electrical conduction of the aligned CNTs in the composite electrodes lead to fast device actuation speed ( 10% strain/second). One critical issue in developing advanced actuator materials is how to suppress the strain that does not contribute to the actuation (unwanted strain) thereby reducing actuation effi ciency. Here, experiments demonstrate that the VA-CNTs give an anisotropic elastic response in the composite electrodes, which suppresses the unwanted strain and markedly enhances the actuation strain ( 8% strain under 4 V). The results reported here suggest pathways for optimizing the electrode morphology in IPCNCs using ultrahigh volume fraction VA-CNTs to further enhanced performance.

    Original languageEnglish (US)
    Pages (from-to)3266-3271
    Number of pages6
    JournalAdvanced Functional Materials
    Volume20
    Issue number19
    DOIs
    StatePublished - Oct 8 2010

    All Science Journal Classification (ASJC) codes

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

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