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      Role of Cationic Size and Valency in Mechanoelectrical Transduction of Ion-Containing Polymers

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          Most cited references 33

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          Piezoelectricity and flexoelectricity in crystalline dielectrics

           A Tagantsev (1986)
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            Ionic conductivity in crystalline polymer electrolytes.

            Polymer electrolytes are the subject of intensive study, in part because of their potential use as the electrolyte in all-solid-state rechargeable lithium batteries. These materials are formed by dissolving a salt (for example LiI) in a solid host polymer such as poly(ethylene oxide) (refs 2, 3, 4, 5, 6), and may be prepared as both crystalline and amorphous phases. Conductivity in polymer electrolytes has long been viewed as confined to the amorphous phase above the glass transition temperature, Tg, where polymer chain motion creates a dynamic, disordered environment that plays a critical role in facilitating ion transport. Here we show that, in contrast to this prevailing view, ionic conductivity in the static, ordered environment of the crystalline phase can be greater than that in the equivalent amorphous material above Tg. Moreover, we demonstrate that ion transport in crystalline polymer electrolytes can be dominated by the cations, whereas both ions are generally mobile in the amorphous phase. Restriction of mobility to the lithium cation is advantageous for battery applications. The realization that order can promote ion transport in polymers is interesting in the context of electronically conducting polymers, where crystallinity favours electron transport.
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              Energy Harvesting Technologies

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                Author and article information

                Contributors
                (View ORCID Profile)
                (View ORCID Profile)
                Journal
                ACS Sustainable Chemistry & Engineering
                ACS Sustainable Chem. Eng.
                American Chemical Society (ACS)
                2168-0485
                2168-0485
                February 01 2021
                January 20 2021
                February 01 2021
                : 9
                : 4
                : 1837-1845
                Affiliations
                [1 ]Department of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
                [2 ]SABIC Plastic Applications Development Center, Riyadh 12373, Kingdom of Saudi Arabia
                [3 ]Department of Physics, Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, United States
                Article
                10.1021/acssuschemeng.0c08252
                © 2021

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