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Multifunctional Energy Storage Integration into Electrospun Epoxy-CNT Nanofiber Enhanced CFRP Composite Structure

PIAS KUMAR BISWAS, MAYUR JADHAV, ASEL ANAND HABARAKADA LIYANAGE, HAMID DALIR, MANGILAL AGARWAL

Abstract


This work presents and assesses a structural integrity concept for a multifunctional carbon fiber reinforced composite with an embedded lithium-ion battery. In order to find a better packaging strategy for embedding lithium-ion batteries at its core, we compared adaptable composite structures made of traditional carbon fiber reinforced polymer (CFRPs), air-sprayed, and electrospun epoxy-multiwalled carbon nanotubes (epoxy-CNT) enhanced CFRPs. The electrospinning technique is well recognized across the world as a versatile and cost-effective way of producing continuous nanofilaments. It was precisely applied to the prepreg surface to provide efficient interfacial bonding and adhesion between the layers. The mechanical and physical characteristics of CFRPs reinforced with electrospun epoxy-carbon nanotubes have been demonstrated to be superior to those of conventional CFRP prepreg composites. Simultaneously, the air sprayed epoxy-carbon nanotube enhanced CFRP provides more mechanical strength than conventional CFRP prepreg but less than electrospun fiber-enhanced composites. The new multifunctional energy storage composite (MESC) might be a design factor in terms of economic feasibility. These components also help to the battery's structural load-bearing implementation and effective load transmission without damaging the battery's chemical composition. MESC design validation, manufacturing procedures, and experimental characterization (mechano-electrical) are all investigated in this paper. The electrochemical characterization findings demonstrate that the MESCs function similarly to ordinary lithium-ion pouch cells without any external packaging and under all loading circumstances. The mechanical strength and stiffness of the MESC cells, especially the electrospun epoxy-CNT enhanced MESC, are tested in three-point bending tests. The results show that the electrospun epoxy-CNT enhanced MESC has a lot more strength and stiffness than traditional pouch cells and air-sprayed CFRP at a lower weight and thickness. This mechanical robustness of the MESCs enables them to be manufactured as energy-storage devices for electric vehicles.


DOI
10.12783/asc37/36403

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