3D Structural Batteries in Fiber Reinforced Composite Panels
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Date
2022-12
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The Ohio State University
Abstract
Over the last decade, electric vehicles have the limelight as they transferred from research to large scale production to serve customers. Traditional electric vehicles batteries contribute to ~40% of total vehicle weight. Liquid electrolyte-based lithium-ion battery is not stable in ambient conditions as it is prone to moisture, leakage, flammability, and they add additional weight to the vehicle. Solid-state structural battery uses electrolyte in solid state, which reduces leakage and flammability caused by traditional battery, and will take applied load while delivering required electrochemical performance. Recent advancements in solid-state electrolyte such as elasticity, and high ionic conductivity makes it a novel choice for solid-state structural electrolyte. Carbon fibers (CF) are used as electrodes to take advantage of their high stiffness, high tensile strength, and electrical conductivity. Vacuum bagging is used to mimic CFRP in full cell architecture. CF have a specific capacity of 60 mAh/g. Polyacrylonitrile (PAN), and polyethylene oxide (PEO) are able to develop ionic conductivities ~1 mS/cm with 0.1 MPa. Bis-EMA full cell with LFP has a specific capacity of 25 mAh/g. Solid-state structural battery will play an important role in the future by replacing structural components and delivering additional range. One unique advantage is it can act as light weight battery for drones.
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Keywords
Solid-State Structural Battery