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Free-standing protective films for enhancing the cyclability of organic batteries

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Abstract

Organic sodium-ion batteries (OSIBs) are regarded as potential alternatives to traditional inorganic lithium-ion batteries. But organic active materials always suffer from dissolution in organic electrolytes. The dissolution significantly reduces the capacity, coulombic efficiency and cyclability, and subsequently limits the possible large-scale applications of organic batteries. Herein, inspired by the success of poly(3,4-ethylenedioxythiophene)-poly(styrene sulfonate) (PEDOT:PSS) film in alleviating the shuttle of organic electrodes to a certain extent and the good mechanical properties of polyethylene oxide (PEO) which has been extensively studied as a solid-state electrolyte (SSEs), we develop a free-standing protective film (only ∼11 μm) with blended PEDOT:PSS and PEO for inhibiting the shuttle of organic electrode materials. The application of free-standing protective films significantly improves the capacity, coulombic efficiency and cyclability of organic active electrodes, by using 5,7,12,14-pentacenetetrone (PT) as a typical demonstration, much better than the previously reported protective films.

Graphical abstract: Free-standing protective films for enhancing the cyclability of organic batteries

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Publication details

The article was received on 29 Sep 2018, accepted on 14 Nov 2018 and first published on 14 Nov 2018


Article type: Paper
DOI: 10.1039/C8SE00477C
Citation: Sustainable Energy Fuels, 2019, Advance Article
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    Free-standing protective films for enhancing the cyclability of organic batteries

    S. Zhu, M. Tang, Y. Wu, Y. Chen, C. Jiang, C. Xia, S. Zhuo, B. Wang and C. Wang, Sustainable Energy Fuels, 2019, Advance Article , DOI: 10.1039/C8SE00477C

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