Presentation Title：Challenges of key materials for solid-state batteries and application practices of niobium

Abstract：

Solid-state batteries have garnered unprecedented attention due to their potential advantages, including high safety, high specific energy, high rate capability, long lifespan, and high cost-effectiveness. Among these, solid-state electrolytes and high-capacity cathodes play a crucial role as key materials in solid-state batteries. Firstly, the current status, development trends, as well as the challenges and strategies for key materials of solid-state batteries are analyzed. Secondly, the technological and product development progress of Beijing Easpring in recent years is introduced, including various solid states electrolytes (oxides, sulfides, multi- component composites), as well as several cathode materials (lithium cobalt oxide, lithium nickel cobalt manganese oxide, lithium-rich manganese oxide, and lithium iron phosphate) for solid state batteries. Finally, the modification mechanism and role of Nb in solid-state electrolytes and high energy density cathode materials are explained.

Bio：

Dr. Yafei Liu, professor-level engineer, director of Institute of New Energy Materials at Beijing Easpring Material Technology Co., Ltd., State Council expert for special allowance, project review expert for the Ministry of Science and Technology, and Ministry of Industry and Information Technology, member of the New Energy Battery Branch of the China Composite Materials Society. He has been engaged in scientific research, product development and industrialization of key materials and their precursors for lithium-ion batteries, solid-state lithium batteries, sodium-ion batteries, etc. He has won multiple Beijing Science and Technology Progress Awards and China Nonferrous Metals Industry Science and Technology Awards. Several high-performance materials he developed have been exported to the international high-end battery market. He has published one monograph and holds 174 authorized patents, including 36 PCT patents.