A spongy graphene paper with an inside foldable corrugated structure is fabricated by electrothermal reduction of the oxygen-containing groups inside an RGO paper. Reversible macroscopical length contraction of the spongy graphene paper with a strain of 2.4% under 10 V voltage is exhibited, mostly attributed to the deformation of corrugated structures.
Y. Hu, T. Lan, G. Wu, Z. Zhu, X. Tao and W. Chen, Chem. Commun., 2014, 50, 4951 DOI: 10.1039/C3CC49376H
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