2018-Sustainable Industrial Processing Summit
SIPS2018 Volume 6. New and Advanced Materials and Technologies

Editors:F. Kongoli, F. Marquis, P. Chen, T. Prikhna, N. Chikhradze
Publisher:Flogen Star OUTREACH
Publication Year:2018
Pages:392 pages
ISBN:978-1-987820-92-8
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
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    High Effective Surface Area Electrodes by Electrochemically-induced Swelling of Aligned CNT Fibers

    Katarzyna Krukiewicz1; Roman Turczyn1; John Bulmer2; Krzysztof Koziol3;
    1SILESIAN UNIVERSITY OF TECHNOLOGY, Gliwice, Poland; 2UNIVERSITY OF CAMBRIDGE, Cambridge, United Kingdom; 3UNIVERSITY OF CAMBRIDGE, Cranfield, United Kingdom;
    Type of Paper: Regular
    Id Paper: 310
    Topic: 43

    Abstract:

    Fibers made purely of aligned carbon nanotubes (ACNT) exhibit remarkable properties, such as high specific strength, stiffness, electrical and thermal conductivity, as well as extreme flexibility [1-3]. The uniqueness of ACNT fibers lies in the fact that during the application of certain potentials they undergo the unusual process of swelling [4]. Since this process leads to the increase in radial dimension and effective surface area, swollen ACNT fibers can be considered as advantageous materials for electrodes in ion batteries and supercapacitors. In this paper, we demonstrate that through the process of swelling, the effective surface area of ACNT fiber can be significantly increased. The effect of swelling on the enlargement of effective surface area is extensively investigated by means of chronoamperometry in the function of applied potential and time of potential application. It is shown that by the careful choice of swelling process parameters, it is possible to increase the effective surface area of ACNT fiber up to 450 times when compared with the initial geometric area of the fiber, reaching the specific effective surface area of 7.5 m2 g-1.

    Keywords:

    New and advanced materials;

    References:

    [1] K. Koziol, J. Vilatela, A. Moisala, M. Motta, P. Cunniff, M. Sennett, et al., Science 318 (2007) 1892-1895.
    [2] C. Paukner, K. Koziol, Sci. Rep. 4 (2014) 3903-3909.
    [3] A.S. Wu, T.W. Chou, Mater. Today 15 (2012) 302-310.
    [4] K. Krukiewicz, J.S. Bulmer, K.K.K. Koziol, J.K. Zak, Electrochem. Commun. 64 (2016) 30-34.

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    Cite this article as:

    Krukiewicz K, Turczyn R, Bulmer J, Koziol K. (2018). High Effective Surface Area Electrodes by Electrochemically-induced Swelling of Aligned CNT Fibers. In F. Kongoli, F. Marquis, P. Chen, T. Prikhna, N. Chikhradze (Eds.), Sustainable Industrial Processing Summit SIPS2018 Volume 6. New and Advanced Materials and Technologies (pp. 197-206). Montreal, Canada: FLOGEN Star Outreach