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    Molecular origin of enhanced proton conductivity in anhydrous ionic systems

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    Paluch_Journal_of_the_American_Chemical_Society.pdf (3.963Mb)
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    Publication date
    2015-01-28
    Author
    Wojnarowska, Z.
    Paluch, Krzysztof J.
    Shoifet, E.
    Schick, C.
    Tajber, L.
    Knapik, J.
    Wlodarczyk, P.
    Grzybowska, K.
    Hensel-Bielowka, S.
    Verevkin, S.P.
    Paluch, M.
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    Keyword
    Electric Conductivity
    ; Ions
    ; Lidocaine
    ; Molecular structure
    ; Protons
    ; Quantum theory
    Rights
    © 2014 American Chemical Society. 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 http://dx.doi.org/10.1021/ja5103458
    
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    Abstract
    Ionic systems with enhanced proton conductivity are widely viewed as promising electrolytes in fuel cells and batteries. Nevertheless, a major challenge toward their commercial applications is determination of the factors controlling the fast proton hopping in anhydrous conditions. To address this issue, we have studied novel proton-conducting materials formed via a chemical reaction of lidocaine base with a series of acids characterized by a various number of proton-active sites. From ambient and high pressure experimental data, we have found that there are fundamental differences in the conducting properties of the examined salts. On the other hand, DFT calculations revealed that the internal proton hopping within the cation structure strongly affects the pathways of mobility of the charge carrier. These findings offer a fresh look on the Grotthuss-type mechanism in protic ionic glasses as well as provide new ideas for the design of anhydrous materials with exceptionally high proton conductivity.
    URI
    http://hdl.handle.net/10454/9420
    Version
    Accepted Manuscript
    Citation
    Wojnarowska Z, Paluch KJ, Shoifet E et al (2015) Molecular origin of enhanced proton conductivity in anhydrous ionic systems. Journal of the American Chemical Society. 137(3): 1157-1164.
    Link to publisher’s version
    http://dx.doi.org/10.1021/ja5103458
    Type
    Article
    Collections
    Life Sciences Publications

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