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Issue 23, 2012
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Three-dimensional graphenepolypyrrole hybrid electrochemical actuator

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The advancement of mechanical actuators benefits from the development of new structural materials with prominent properties. A novel three-dimensional (3D) hydrothermally converted graphene and polypyrrole (G–PPy) hybrid electrochemical actuator is presented, which is prepared via a convenient hydrothermal process, followed by in situ electropolymerization of pyrrole. The 3D pore-interconnected G–PPy pillar exhibits strong actuation responses superior to pure graphene and PPy film. In response to the low potentials of ±0.8 V, the saturated strain of 3D G–PPy pillar can reach a record of 2.5%, which is more than 10 times higher than that of carbon nanotube film and about 3 times that of unitary graphene film under an applied potential of ±1.2 V. Also, the 3D G–PPy actuator exhibits high actuation durability with high operating load as demonstrated by an 11 day continuous measurement. Finally, a proof-of-concept application of 3D G–PPy as smart filler for on/off switch is also demonstrated, which indicates the great potential of the 3D G–PPy structure developed in this study for advanced actuator systems.

Graphical abstract: Three-dimensional graphene–polypyrrole hybrid electrochemical actuator

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Publication details

The article was received on 11 Sep 2012, accepted on 02 Oct 2012 and first published on 09 Oct 2012

Article type: Paper
DOI: 10.1039/C2NR32699J
Citation: Nanoscale, 2012,4, 7563-7568
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    Three-dimensional graphenepolypyrrole hybrid electrochemical actuator

    J. Liu, Z. Wang, Y. Zhao, H. Cheng, C. Hu, L. Jiang and L. Qu, Nanoscale, 2012, 4, 7563
    DOI: 10.1039/C2NR32699J

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