Ion transport and storage in ionic polymer bending actuators

Jun Hong Lin, Yang Liu, Gokhan Hatipoglu, Qiming Zhang

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


    The actuation of ionic polymer actuators is mainly caused by the ion transport and excess ions storage in the membrane and electrodes. To quantify the charge transport behavior, a time domain method based on Poisson-Nernst-Planck equations was applied. The time domain transient current in response to a step voltage can provide insights on the charge transport and storage behaviors in the membranes. In this study, we investigate the charge transport behavior of Aquivion ionomer with different uptakes of 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (EM1-Tf). A critical uptake and voltage independent of charge transport behavior were observed. The results also show that bending actuations of the Aquivion membrane with 40wt% EM1-Tf is much larger than that of Nafion, indicating that the shorter flexible side chain ionomer possesses a better electromechanical coupling between the excess ions and the membrane backbones, while not affect the actuation speed.

    Original languageEnglish (US)
    Title of host publicationPolymer-Based Materials and Composites - Synthesis, Assembly, Properties and Applications
    Number of pages6
    StatePublished - 2011
    Event2010 MRS Fall Meeting - Boston, MA, United States
    Duration: Nov 29 2010Dec 3 2010

    Publication series

    NameMaterials Research Society Symposium Proceedings
    ISSN (Print)0272-9172


    Other2010 MRS Fall Meeting
    Country/TerritoryUnited States
    CityBoston, MA

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering


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