Transports of ionic liquids in ionic polymer conductor network composite actuators

Yang Liu, Sheng Liu, Junhong Lin, Dong Wang, Vaibhav Jain, Reza Montazami, James R. Heflin, Jing Li, Louis Madsen, Q. M. Zhang

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

    1 Scopus citations


    We investigate the influence of ionic liquids on the electromechanical performance of Ionic Polymer Conductor Network Composite (IPCNC) bending actuators. Two imidazolium ionic liquids (ILs) with one cation, which is 1-ethyl-3- methylimidazolium ([EMI+]), and two different anions, which are tetrafluoroborate ([BF4-]) and trifluoromethanesulfonate ([Tf-]), are chosen for the study. By combining the time domain electric and electromechanical responses, we developed a new model that describes the ion transports in IPCNC actuators. The time constant of excess cation and anion migration in various composite electrodes are deduced: 6s and 25s in RuO2/Nafion; 7.9s and 36.3s in RuO2/Aquivion; 4.8s and 53s in Au/PAH, respectively. NMR is also applied to provide quantitative measures of self-diffusion coefficients independently for IL anions and cations both in pure ILs and in ILs absorved into ionomers. All the results indicate that the motion of cation, in the studied pure ionic liquids, polymer matrix and conductor network composites, is faster than that of anion. Moreover, the CNC morphology is playing a crucial role in determining the ion transport in the porous electrodes.

    Original languageEnglish (US)
    Title of host publicationElectroactive Polymer Actuators and Devices (EAPAD) 2010
    StatePublished - 2010
    EventElectroactive Polymer Actuators and Devices (EAPAD) 2010 - San Diego, CA, United States
    Duration: Mar 8 2010Mar 11 2010

    Publication series

    NameProceedings of SPIE - The International Society for Optical Engineering
    ISSN (Print)0277-786X


    OtherElectroactive Polymer Actuators and Devices (EAPAD) 2010
    Country/TerritoryUnited States
    CitySan Diego, CA

    All Science Journal Classification (ASJC) codes

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics
    • Computer Science Applications
    • Applied Mathematics
    • Electrical and Electronic Engineering


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