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    Electrochemistry on Tribocharged Polymers Is Governed by the Stability of Surface Charges Rather than Charging Magnitude

    79598.pdf (1.030Mb)
    Access Status
    Open access
    Authors
    Zhang, Jinyang
    Rogers, F.J.M.
    Darwish, Nadim
    Gonçales, V.R.
    Vogel, Yan
    Wang, Fei
    Gooding, J.J.
    Peiris, Chandramalika
    Jia, Guohua
    Veder, Jean-Pierre
    Coote, M.L.
    Ciampi, Simone
    Date
    2019
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhang, J. and Rogers, F.J.M. and Darwish, N. and Gonçales, V.R. and Vogel, Y.B. and Wang, F. and Gooding, J.J. et al. 2019. Electrochemistry on Tribocharged Polymers Is Governed by the Stability of Surface Charges Rather than Charging Magnitude. Journal of the American Chemical Society. 141 (14): pp. 5863-5870.
    Source Title
    Journal of the American Chemical Society
    DOI
    10.1021/jacs.9b00297
    ISSN
    0002-7863
    Faculty
    Faculty of Science and Engineering
    School
    School of Molecular and Life Sciences (MLS)
    John de Laeter Centre (JdLC)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP190100735
    http://purl.org/au-research/grants/arc/DE160100732
    http://purl.org/au-research/grants/arc/DE160101101
    http://purl.org/au-research/grants/arc/DE160100589
    http://purl.org/au-research/grants/arc/FL170100041
    http://purl.org/au-research/grants/arc/CE140100012
    http://purl.org/au-research/grants/arc/FL150100060
    Remarks

    This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of the American Chemical Society, copyright © American Chemical Society, after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/jacs.9b00297.

    URI
    http://hdl.handle.net/20.500.11937/79498
    Collection
    • Curtin Research Publications
    Abstract

    Copyright © 2019 American Chemical Society.

    Electrically insulating objects gain a net electrical charge when brought in and out of contact. This phenomenon - triboelectricity - involves the flow of charged species, but conclusively establishing their nature has proven extremely difficult. Here, we demonstrate an almost linear relationship between a plastic sample's net negative charge and the amount of solution metal ions discharged to metallic particles with a coefficient of proportionality linked to its electron affinity (stability of anionic fragments). The maximum magnitude of reductive redox work is also material dependent: metallic particles grow to a larger extent over charged dielectrics that yield stable cationic fragments (smaller ionization energy). Importantly, the extent to which the sample can act as electron source greatly exceeds the net charging measured in a Faraday pail/electrometer set up, which brings direct evidence of triboeletricity being a mosaic of positive and negative charges rather than a homogeneous ensemble and defines for the first time their quantitative scope in electrochemistry.

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