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

    Research output: Contribution to journalArticlepeer-review

    18 Citations (Scopus)

    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.

    Original languageEnglish
    Pages (from-to)89051-89056
    Number of pages6
    JournalRSC Advances
    Volume6
    Issue number92
    DOIs
    Publication statusPublished - 2016

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