Electrical behaviour of native cellulose nanofibril/carbon nanotube hybrid aerogels under cyclic compression

Miao Wang; Ilya V. Anoshkin; Albert G. Nasibulin; Robin H. A. Ras; Nonappa; Janne Laine; Esko I. Kauppinen; Olli Ikkala

doi:10.1039/C6RA16202A

Electrical behaviour of native cellulose nanofibril/carbon nanotube hybrid aerogels under cyclic compression†

Miao Wang,^a Ilya V. Anoshkin,^a Albert G. Nasibulin,^abc Robin H. A. Ras,^a Nonappa,

^a Janne Laine,^d Esko I. Kauppinen^a and Olli Ikkala

*^a

Author affiliations

* Corresponding authors

^a Department of Applied Physics, School of Science, Aalto University, P. O. Box 15100, FI-00076 Espoo, Finland
E-mail: olli.ikkala@aalto.fi

^b Skolkovo Insititute of Science and Technology, Nobel str. 3, Moscow, Russia

^c Saint-Petersburg State Polytechnical University, Department of Material Science, Polytechnicheskaya 29, Saint-Petersburg, Russia

^d Department of Forest Products Technology, School of Chemical Technology, Aalto University, P. O. Box 16300, FI-00076, Espoo, Finland

Abstract

Hybrid aerogels consisting of cellulose nanofibers (CNF) and modified few-walled carbon nanotubes (FWCNT) are investigated under cyclic mechanical compression to explore “electrical fatigue”. For this purpose the FWCNTs were hydrophilized, thus promoting their aqueous dispersibility to allow FWCNT/CNF hybrid hydrogels, followed by freeze-drying to obtain hybrid aerogels. The optimized composition consisting of FWCNT/CNF 20/80 wt/wt showed conductivity of 10⁻⁵ S cm⁻¹ as promoted due to double percolation, and showed only small changes in electrical and mechanical behaviour upon cycling 100 times. The electrical behaviour under cycled compression shows good stability and reversibility.

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DOI: https://doi.org/10.1039/C6RA16202A
Article type: Paper
Submitted: 22 Jun 2016
Accepted: 05 Sep 2016
First published: 05 Sep 2016
This article is Open Access

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RSC Adv., 2016,6, 89051-89056

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Electrical behaviour of native cellulose nanofibril/carbon nanotube hybrid aerogels under cyclic compression

M. Wang, I. V. Anoshkin, A. G. Nasibulin, R. H. A. Ras, Nonappa, J. Laine, E. I. Kauppinen and O. Ikkala, RSC Adv., 2016, 6, 89051 DOI: 10.1039/C6RA16202A

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Electrical behaviour of native cellulose nanofibril/carbon nanotube hybrid aerogels under cyclic compression†

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Electrical behaviour of native cellulose nanofibril/carbon nanotube hybrid aerogels under cyclic compression

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