Title
Structural composite batteries made from carbon fibre reinforced electrodes / polymer gel electrolyte prepregs
Author
Alexander Beutl
Center for Low-Emission Transport, AIT Austrian Institute of Technology GmbH
Author
Helmut Kühnelt
Center for Low-Emission Transport, AIT Austrian Institute of Technology GmbH
... show all
Abstract
Full cells of structural composite batteries comprising carbon fibre reinforced anodes and cathodes decorated with lithium titanate and LiNi0.3Mn0.3Co0.3O2 (NMC111), respectively, embedded in a polymer gel electrolyte were produced. Spread carbon fibres were coated with cathode and anode active materials followed by impregnation with a polymer gel electrolyte consisting of PVDF particles dispersed in an ionic liquid containing a lithium salt. The resulting carbon fibre reinforced electrodes/polymer gel electrolyte prepregs could be easily stored, handled or, if needed, transported. Cathode and anode prepregs were laminated and fused by compression moulding, resulting within a time frame of couple of minutes in full cell structural composite batteries. The batteries were charged and discharged at current densities of 0.1C, resulting in a specific capacity of 35 mAh/gNMC111 and energy density of 5.6 Wh/(kg battery). The composite batteries had a Young's modulus of 4.6 GPa and tensile strength of 32 MPa. A facile layup process enabled proof-of-concept demonstration of ‘all’ carbon fibre full cell multifunctional structural composite batteries.
Keywords
Multifunctional compositesCarbon fibre prepregsThermoplastic polymersStructural batteryPolymer gel electrolyteCarbon fibre reinforced electrodes
Object type
Language
English [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:2044547
Appeared in
Title
Composites Science and Technology
Volume
244
ISSN
0266-3538
Issued
2023
Publisher
Elsevier BV
Date issued
2023
Access rights
Rights statement
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