Design of Sustainable Layered Oxide Cathodes for Na-Ion Batteries

Na-ion batteries are expected to deliver high performance comparable to some of the Li-ion batteries for grid energy storage and electric vehicle applications. Among the various chemistries, layered oxide cathodes provide high energy density and excellent flexibility in material design for sustainability. In our journey of sodium-ion battery development at Pacific Northwest National Laboratory, we have demonstrated the viability of the technology using high-Ni layered oxides and have developed various types of layered oxides towards low-cost cathodes with reduced amounts of critical materials. Fading mechanisms of these materials in the bulk structures and at the interfaces also are investigated. In this talk, I will reveal our effort on both fundamental understanding of the cathode material design and practical research on the material scaleup and pouch cell fabrication.