Experimental and computational characterization of carbon fibre based structural battery electrode laminae
نویسندگان
چکیده
In this paper, electrode laminae consisting of carbon fibres embedded in structural battery electrolyte (CF-SBE electrodes) are characterized with respect to their multifunctional (i.e. combined electrochemical and mechanical) performance utilizing experimental numerical techniques. The studied material is made from commercially available polyacrylonitrile (PAN)-based a porous SBE matrix/electrolyte, which composed two continuous phases: solid polymer skeleton (vinyl ester-based) Li-salt containing liquid electrolyte. Experimental studies performed on CF-SBE half-cells, whereby coupled electro-chemo-mechanical finite element model exploited. Results show that, similar traditional batteries, thickness, transport properties the applied current significantly affect performance. For example, increasing thickness 50 ? m 200 results reduction specific capacity approximately 70/95% for an 30/120 mA g ?1 fibres, respectively. Further, Li-insertion induced longitudinal expansion fibre electrodes video microscopically recorded during charge/discharge conditions. total/reversible found be 0.85/0.8% while reversible 0.6%. gives rise residual strains demonstrated numerically. We expect that utilized computational framework data open route develop high-performing, both mechanically electrochemically, based future lightweight components energy storage ability. • Carbon experimentally theoretically. Effects lamina measured. measured situ cycling. A previously developed validated data.
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ژورنال
عنوان ژورنال: Composites Science and Technology
سال: 2022
ISSN: ['2662-1827', '2662-1819']
DOI: https://doi.org/10.1016/j.compscitech.2022.109283