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Issue 34, 2017
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BIAN based functional diimine polymer binder for high performance Li ion batteries

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Abstract

A bis-imino-acenaphthenequinone (BIAN)–fluorene copolymer (π conjugated polymer bearing BIAN and fluorene units) binder was designed, synthesised and used for the fabrication of a graphite electrode in lithium-ion batteries. Unlike the PVDF binder, the electrode with the BIAN–fluorene binder exhibited significantly improved electrochemical performance in terms of its rate capability, cycling behaviour and specific capacity. At a rate of 1C, the electrode with the BIAN–fluorene binder exhibited more than 250 mA h g−1 capacity after 100 cycles while the electrode made with the PVDF binder delivered only 165 mA h g−1. The significant improvement of cycling performance is due to the improvement in the adherence of the electrode laminate to the current collector and improved interface. Electrochemical impedance spectroscopy and dynamic electrochemical impedance spectroscopy studies showed the formation of an improved interface with the BIAN–fluorene based binder.

Graphical abstract: BIAN based functional diimine polymer binder for high performance Li ion batteries

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Publication details

The article was received on 04 May 2017, accepted on 24 Jul 2017 and first published on 11 Aug 2017


Article type: Paper
DOI: 10.1039/C7TA03843G
Citation: J. Mater. Chem. A, 2017,5, 17909-17919
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    BIAN based functional diimine polymer binder for high performance Li ion batteries

    S. G. Patnaik, R. Vedarajan and N. Matsumi, J. Mater. Chem. A, 2017, 5, 17909
    DOI: 10.1039/C7TA03843G

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