Advanced Electrolytes for High-Performance Solid State Metal Batteries
Venkataraman Thangadurai a
a Department of Chemistry, University of Calgary, University Way Northwest, 2975, Calgary, Canada
Proceedings of 24th International Conference on Solid State Ionics (SSI24)
Devices for a Net Zero World
London, United Kingdom, 2024 July 14th - 19th
Organizers: John Kilner and Stephen Skinner
Keynote, Venkataraman Thangadurai, presentation 125
Publication date: 10th April 2024

The success of rechargeable lithium-ion batteries (LIBs) has brought evident convenience to human society, but state-of-the-art LIBs with a graphite anode are approaching their energy density limits. Li metal is considered the ultimate anode material due to its ultra-high theoretical specific capacity of 3860 mAh g-1, which is more than 10 times higher than lithiated graphite. Nonetheless, Li metal anode suffers from poor safety and low cycling efficiency due to its high reactivity. Electrolytes that work with Li anode should possess excellent stability against Li metal or form a highly passivating interface. It is also critical to control the amount of Li in the cell, preferably having no excess Li at the anode side.  In this presentation, next-generation electrolytes that enable such types of high-performance Li metal batteries will be discussed, including advanced garnet-type ceramic electrolytes and hybrid electrolytes. Also, recent progress in the development of solid state sodium ion electrolytes based on silicate-structure and solid state polymer electrolytes for solid state Na batteries will be presented.   

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