Self-Doped Conjugated Polymeric Binders Improve the Capacity and Mechanical Properties of V2O5 Cathodes

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dc.citation.articleNumber589en_US
dc.citation.issueNumber4en_US
dc.citation.journalTitlePolymersen_US
dc.citation.volumeNumber11en_US
dc.contributor.authorLi, Xiaoyien_US
dc.contributor.authorAn, Hyosungen_US
dc.contributor.authorStrzalka, Josephen_US
dc.contributor.authorLutkenhaus, Jodieen_US
dc.contributor.authorVerduzco, Rafaelen_US
dc.date.accessioned2019-12-12T17:25:38Zen_US
dc.date.available2019-12-12T17:25:38Zen_US
dc.date.issued2019en_US
dc.description.abstractPolymeric binders serve to stabilize the morphology of electrodes by providing adhesion and binding between the various components. Successful binders must serve multiple functions simultaneously, including providing strong adhesion, improving conductivity, and providing electrochemical stability. A tradeoff between mechanical integrity and electrochemical performance in binders for lithium-ion batteries is one of the many challenges of improving capacity and performance. In this paper, we demonstrate a self-doped conjugated polymer, poly(9,9-bis(4′-sulfonatobutyl)fluorene-alt-co-1,4-phenylene) (PFP), which not only provides mechanical robustness but also improves electrode stability at temperatures as high as 450 °C. The self-doped PFP polymer is comprised of a conjugated polyfluorene backbone with sulfonate terminated side-chains that serve to dope the conjugated polymer backbone, resulting in stable conductivity. Composite electrodes are prepared by blending PFP with V2O5 in water, followed by casting and drying. Structural characterization with X-ray diffraction and wide-angle X-ray scattering shows that PFP suppresses the crystallization of V2O5 at high temperatures (up to 450 °C), resulting in improved electrode stability during cycling and improved rate performance. This study demonstrates the potential of self-doped conjugated polymers for use as polymeric binders to enhance mechanical, structural, and electrochemical properties.en_US
dc.identifier.citationLi, Xiaoyi, An, Hyosung, Strzalka, Joseph, et al.. "Self-Doped Conjugated Polymeric Binders Improve the Capacity and Mechanical Properties of V2O5 Cathodes." <i>Polymers,</i> 11, no. 4 (2019) MDPI: https://doi.org/10.3390/polym11040589.en_US
dc.identifier.digitalpolymers-11-00589en_US
dc.identifier.doihttps://doi.org/10.3390/polym11040589en_US
dc.identifier.urihttps://hdl.handle.net/1911/107888en_US
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.rightsThis is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly citeden_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subject.keywordconjugated polymeren_US
dc.subject.keywordself-doped polymeren_US
dc.subject.keywordlithium-ion batteryen_US
dc.subject.keywordconductive binderen_US
dc.subject.keywordvanadium pentoxideen_US
dc.titleSelf-Doped Conjugated Polymeric Binders Improve the Capacity and Mechanical Properties of V2O5 Cathodesen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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