An Investigation of Li-Ion Transport in Solid-State Electrolytes for All-Solid-State Batteries in Electric Vehicles

锂离子电池（LIB）是电动汽车的关键部件。目前具有液体电解质的LIB在其寿命、能量密度以及特别是安全性方面存在问题。因此，固态锂金属电池（SSLB）由于其不易燃的性质而引起了人们的广泛关注。固体电解质如Li6PS5X（X=Cl，Br）由于其低成本和提供高离子电导率的能力而成为有前景的材料。在这个项目中，黄教授和GLABAT固态电池公司的研究人员，（GLABAT）将使用最先进的固态NMR（SSNMR）光谱来研究电动汽车中使用的全固态电池的固态电解质中的锂离子传输。由于SSNMR提供了有关结构和动力学的特定核素信息，因此他们将使用各种最先进的7Li固态NMR光谱技术直接探测纯Li6PS5X电解质及其与电极材料界面中的Li+扩散。这一成果将使GLABAT能够改善目前的性能并设计新的全固态电池。

Lithium-ion batteries (LIBs) are a key component in electric vehicles. Current LIBs with liquid-electrolytes have problems in their lifespan, energy density and, in particular, safety. Consequently, solid-state lithium metal batteries (SSLBs) have attracted much attention due to their non-flammable nature. Solid-electrolytes such as Li6PS5X (X=Cl, Br) are promising materials due to their low cost and ability to deliver high ionic conductivity. However, the Li+-ion transport is poorly understood.In this project, Prof. Huang and researchers at the GLABAT Solid-State Battery Inc. (GLABAT) will use state-of-the-art solid-state NMR (SSNMR) spectroscopy to study Li-ion transport in solid-state electrolytes for all-solid-state batteries used in electric vehicles. Since SSNMR provides nuclide-specific information on structure and dynamics, they will use various state-of-the-art 7Li solid-state NMR spectroscopic techniques to directly probe Li+ diffusion in pure Li6PS5X electrolytes and in their interfaces with electrode materials. The outcome will enable GLABAT to improve the performance of current and design new all-solid-state batteries.