Long-lasting solid-state Na-ion batteries for low-cost energy storage

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There is a critical need for improved energy storage technologies for electric vehicles and large-scale integration of renewable electricity grid storage. Currently, lithium-ion batteries offer the best performance in terms of capacity and power delivery. However, lithium is a limited resource with respect to both its total supply in the Earth's crust and its geographic availability, which limits its viability for large scale stationary power applications. Rechargeable batteries which use sodium ions instead of lithium ions for storing charge address the possibility of lithium scarcity in the future, because sodium is a very abundant element. This research project aims to further our recent developments of Na-ion batteries (NIBs) as a potential low-cost, safe and sustainable solution to large-scale electrochemical energy storage systems and bring it to the commercialization phase. The high natural abundance and broad distribution of sodium (Na) resources, including large reserves in Alberta, offer significant cost advantages. We will take a systematic approach to the development of solid electrolytes, using new ceramics and hybrid composites, and the design of the interface between the electrolyte and electrodes, that is critical to battery performance. This approach will enable development of long-lasting, NIBs with high energy density, fast charge/discharge for low-cost energy storage. The broader impact/commercial potential of the developed technology is in its low cost, sustainability and superior properties. The project aligns with the strategic provincial and federal plans to transition to low-carbon economy and provides an opportunity for Alberta to become a national and global leader in this promising technology.