Magnesium-Sulfur batteries with high energy density The emerging application in electrical vehicles, 5G electric devices, and smart grid has put forward higher requirement and challenges for battery technologies with long life, high energy density, materials sustainability and safety. Mg/S battery is a promising candidate of next generation energy storage system in terms of its high …
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Battery imaging Imaging techniques are decisive in battery material analysis and battery failure diagnosis. Our group focuses on imaging techniques of multi-length scales to understand the major problems, including interface stability and dendrite growth, in all-solid-state lithium/sodium/magnesium metal batteries. At this moment, we have used photoacoustic imaging (micro-scale), nano-CT (sub-micron scale), and electron microscopies/synchrotron-based X-ray …
Ion transport mechanism in solid-state ionic conductors Solid-state ion batteries have attracted considerable attention due to their safety, high energy density, and fast charging capability characteristics. Fast ionic conductor is the key component of the solid-state battery. However, there are limited types of ionic conductors that own comparable ionic conductivity to liquid counterparts. The mechanisms …
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Battery interface studies Chemical and Electrochemical processes at solid-liquid and/or solid-solid interfaces are essential to cycle life of lithium-ion/lithium-metal batteries. In conventional lithium-ion batteries with liquid electrolyte, electrolyte decomposition results in the formation of a solid-electrolyte interphase (SEI), and this layer plays an essential role in determining the stability and cyclability of the battery. SEI …