Enhanced electromechanical performance of structural supercapacitor composites with high loading of graphene nanoplatelet at the fibre/matrix interface
Article
Article Title | Enhanced electromechanical performance of structural supercapacitor composites with high loading of graphene nanoplatelet at the fibre/matrix interface |
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ERA Journal ID | 4882 |
Article Category | Article |
Authors | Anurangi, Jayani, Jeewantha, Janitha, Herath, Madhubhashitha, Galhena, Dona T.L. and Epaarachchi, Jayantha |
Journal Title | Composites Part A: Applied Science and Manufacturing |
Journal Citation | 190 |
Article Number | 108617 |
Number of Pages | 11 |
Year | 2024 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 1359-835X |
1878-5840 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.compositesa.2024.108617 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S1359835X24006158 |
Abstract | A structural supercapacitor composite (SSC) is a multifunctional device that can perform load-bearing operations simultaneously while storing electrical energy. In this study, the impact of high loading graphene nanoplatelet (GNP) on carbon fibre (CF) electrodes on the electromechanical performance of SSC was studied. A stable GNP coating at the fibre/matrix interface with poly-tetrafluoroethylene (PTFE) binder was obtained. GNP loading enhances the surface wettability of CF electrodes with the structural electrolyte, improving the electrochemical performance. The developed SSC demonstrated a specific capacitance of 123.5 mF g−1, with a 77 % improvement. In addition, after GNP loading, the tensile strength increased to 254.4 MPa, the modulus reached to 18.0 GPa, and the flexural strength improved to 48.9 MPa. In-situ mechano-electrochemical tests of SSCs showed over 60 % capacitance retention with no significant difference until mechanical failure occurred. These findings provide essential knowledge for further improvements of next-generation multifunctional energy storage composites. |
Keywords | Structural supercapacitor composite; Carbon fibre; Fibre/matrix interface; Energy storage; Graphene nanoplatelet |
Contains Sensitive Content | Does not contain sensitive content |
Sensitive Handling Note | Contains explicit content |
ANZSRC Field of Research 2020 | 400404. Electrochemical energy storage and conversion |
Byline Affiliations | School of Engineering |
Centre for Future Materials | |
Uva Wellassa University of Sri Lanka, Sri Lanka | |
University of Cambridge, United Kingdom |
https://research.usq.edu.au/item/zqv66/enhanced-electromechanical-performance-of-structural-supercapacitor-composites-with-high-loading-of-graphene-nanoplatelet-at-the-fibre-matrix-interface
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