Abstract
The widespread adoption of electric vehicles (EVs) as alternatives to fossil fuels to facilitate a greener and more sustainable future is the most remarkable technological development of recent years. Nevertheless, the exponential increase in energy demand has given rise to significant concerns regarding the safety of batteries, which necessitate urgent consideration. While conventional lithium-ion batteries (LIBs) employ flammable liquid electrolytes, they have demonstrated susceptibility to thermal runaway incidents, which present significant safety hazards and necessitate a fundamental transformation in energy storage technologies. All-solid-state batteries (ASSBs) have emerged as a promising alternative that is able to revolutionize the energy storage industry.One of the primary obstacles that greatly hampers the performance of ASSBs is the issue of point contact between the solid electrolytes and the active materials. This problem stems from poor interfacial adhesion and restricted intimate contact between the two components, impeding effective charge transfer and ion diffusion. The presence of non-conductive interfaces, voids, or delamination zones hinders the efficient diffusion of lithium ions, resulting in increased interfacial resistance and restricted usage of active materials within the electrodes. Furthermore, the issue of solid contact contributes to the localized stress concentration and mechanical strain that occurs during charge-discharge cycles. In this presentation, the concepts of intimate contact in both the anode and cathode will be discussed.
Published Version
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