Journal
MATERIALS RESEARCH EXPRESS
Volume 5, Issue 5, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2053-1591/aabeb1
Keywords
multifunctional structural battery; carbon fibers; electrical energy storage; cyclic voltammetry; impedance spectroscopy inplane shear properties
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Funding
- UET, Lahore and Higher Education Commission, Pakistan [DR/ASRB-89/1931, 20-2658/NRPU/RD/HEC]
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Multifunctional structural batteries based on carbon fiber-reinforced polymer composites are fabricated that can bear mechanical loads and act as electrochemical energy storage devices simultaneously. Structural batteries, containing woven carbon fabric anode; lithium cobalt oxide/graphene nanoplatelets coated aluminum cathode; filter paper separator and cross-linked polymer electrolyte, were fabricated through resin infusion under flexible tooling (RIFT) technique. Compression tests, dynamic mechanical thermal analysis, thermogravimetric analysis and impedance spectroscopy were done on the cross-linked polymer electrolytes while cyclic voltammetry, impedance spectroscopy, dynamic mechanical thermal analysis and in-plane shear tests were conducted on the fabricated structural batteries. A range of solid polymer electrolytes with increasing concentrations of lithium perchlorate salt in crosslinked polymer epoxies were formulated. Increased concentrations of electrolyte salt in cross-linked epoxy increased the ionic conductivity, although the compressive properties were compromised. A structural battery, exhibiting simultaneously a capacity of 0.16 mAh L-1, an energy density of 0.32 WhL(-1) and a shear modulus of 0.75 GPa have been reported.
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