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The Effect of Ionic Liquid Uptake and Self-assembled Conductive Network Composite Layers on NafionTM based Ionic Polymer Metal Composite Electromechanical Bending Actuators

Published online by Cambridge University Press:  15 July 2013

Dong Wang ,
Reza Montazami  and
James R. Heflin
Dong Wang
Affiliation:
Department of Physics, Virginia Tech, Blacksburg, VA 24061, U.S.A.
Reza Montazami
Affiliation:
Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, U.S.A.
James R. Heflin
Affiliation:
Department of Physics, Virginia Tech, Blacksburg, VA 24061, U.S.A.
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Abstract

Ionic liquid (IL) is used as the working electrolyte in ionic polymer metal composite (IPMC) electromechanical bending actuators because of its high stability and conductivity, which are crucial for the consistency and speed of the actuation. Because the bending actuation is caused by the migration and accumulation of the cations and anions of the IL, it is clear that both the overall number of ions and the effectiveness of ion transport and accumulation play important roles in the actuation behavior. In this paper, the effect of enhancing the ion accumulation by the self-assembled conductive network composite (CNC) layers is investigated by comparing the bending behavior of actuators with and without CNC layers. In addition, IPMC actuators with various IL uptakes are also tested in order to study the dependence of the bending performance on the amount of the ions available. It is found that, with the CNC layers, the maximum bending curvature of the actuator increases with increased IL, which shows the crucial role played by the IL. However, under the same conditions, the performance improvement of actuators without CNC layers saturates when the IL uptake reaches around 10% wt. This demonstrates the role of the CNC layers to provide a porous electrode with increased capacitance that thus accommodates accumulation of more ions near the electrodes, which in turn boosts the overall bending curvature of the actuator.

Keywords

actuatorpolymerself-assembly
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1575: Symposium VV – Materials Applications of Ionic Liquids , 2013 , mrss13-1575-vv06-03
Copyright
Copyright © Materials Research Society 2013 

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References

REFERENCES

Eikerling, M., et al. ., “Electrophysical properties of polymer electrolyte membranes: A random network model,” Journal of Physical Chemistry B, vol. 101, pp. 10807–10820, Dec 11 1997.CrossRefGoogle Scholar
Nemat-Nasser, S., “Micromechanics of actuation of ionic polymer-metal composites,” Journal of Applied Physics, vol. 92, pp. 2899–2915, 2002.CrossRefGoogle Scholar
Bennett, M. D. and Leo, D. J., “Ionic liquids as stable solvents for ionic polymer transducers,” Sensors and Actuators a-Physical, vol. 115, pp. 79–90, Sep 15 2004.CrossRefGoogle Scholar
Liu, Y., et al. ., “Ion transport and storage of ionic liquids in ionic polymer conductor network composites,” Applied Physics Letters, vol. 96, May 31 2010.CrossRefGoogle Scholar