High electromechanical reponses of ultra-high-density aligned nano-porous microwave exfoliated graphite oxide/polymer nano-composites ionic actuators

Authors
Ghaffari, M.Zhou, Y.Lin, M.Koo, C.M.Zhang, Q.M.
Issue Date
2014-06
Publisher
Taylor and Francis Ltd.
Citation
International Journal of Smart and Nano Materials, v.5, no.2, pp.114 - 122
Abstract
High elastic energy density and high-efficiency ionic electromechanical actuators were prepared from aligned activated microwave exfoliated graphite oxide (A-aMEGO)/polymer nano-composites, and the electromechanical performance was characterized. The elastic modulus and elastic energy density of the ionic actuators can be tuned over a wide range by varying the polymer (poly (vinylidene fluoride/chlorotrifluoroethylene) [P(VDF-CTFE)]) concentration in the nano-composite actuators. The A-aMEGO/P(VDF-CTFE) nano-composite actuators with 35 wt.% of polymer content exhibit an elastic energy density higher than 5 J/cm3 and an electromechanical conversion efficiency higher than 3.5%, induced under 4 V. The results show the promise of high-density highly aligned graphene electrodes for high-performance ionic electromechanical transduction devices. ? 2014 The Author(s). Published by Taylor & Francis.
Keywords
Actuators; Elastic moduli; Elasticity; Electromechanical devices; Energy efficiency; Fluorine compounds; Graphene oxide; Graphite; Graphite electrodes; Nanocomposites; Self assembly; Elastic energy density; Electromechanical conversion; Electromechanical performance; Electromechanical transduction; Exfoliated graphite; Graphene electrodes; Ultrahigh density; Vinylidene fluoride; Electromechanical actuators; Actuators; Elastic moduli; Elasticity; Electromechanical devices; Energy efficiency; Fluorine compounds; Graphene oxide; Graphite; Graphite electrodes; Nanocomposites; Self assembly; Elastic energy density; Electromechanical conversion; Electromechanical performance; Electromechanical transduction; Exfoliated graphite; Graphene electrodes; Ultrahigh density; Vinylidene fluoride; Electromechanical actuators; actuator; elastic energy density; elastic modulus; nano-porous activated microwave exfoliated graphite oxide (aMEGO); self-assembly
ISSN
1947-5411
URI
https://pubs.kist.re.kr/handle/201004/126767
DOI
10.1080/19475411.2014.917739
Appears in Collections:
KIST Article > 2014
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