TY - GEN
T1 - Ion transport and storage in ionic polymer bending actuators
AU - Lin, Jun Hong
AU - Liu, Yang
AU - Hatipoglu, Gokhan
AU - Zhang, Qiming
N1 - Funding Information:
This material is based upon work supported in part by the U.S. Army Research Office under Grant No. W911NF-07-1-0452 Ionic Liquids in Electro-Active Devices (ILEAD) MURI, by NSF under Grant No. CMMI 0709333, and by NIH under Grant No. R01-EY018387-02. The authors thank Ralph Colby and Sheng Liu for many stimulating discussions.
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
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U2 - 10.1557/opl.2011.670
DO - 10.1557/opl.2011.670
M3 - Conference contribution
AN - SCOPUS:80053246320
SN - 9781605112893
T3 - Materials Research Society Symposium Proceedings
SP - 65
EP - 70
BT - Polymer-Based Materials and Composites - Synthesis, Assembly, Properties and Applications
T2 - 2010 MRS Fall Meeting
Y2 - 29 November 2010 through 3 December 2010
ER -