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Cost Competitive Energy Storage Sodium-based Battery Chemistries Our goal is to develop low cost (≤ $100/kWh), low temp (≤150°C), safe, nonflammable alternatives to Na-S and Li-ion batteries. Based on sodium metal anode and sodium battery chemistries. Highenergyperunitweightandvolume–Smaller devices AbundantdomesticsupplyofNareserves Na-ionconductingseparators(NaSICON) commercially available (Ceramatec, CoorsTek) Low production cost Variouslowcost,safecathodematerialcouples - 120°C Na-I/AlCl3 (fully inorganic), 25°C Na-air (aqueous) FY15 Accomplishments: • 100 Wh sodium-ion cell long-term cycling • >200 cycles of large sodium-ion cell with 87.5% efficiency • Developed cost basis analysis tool for large scale battery and performed sensitivity analysis for Na-I vs. Na-Br • 2 papers published, 4 sodium battery patent applications, 3 invited talks • Demonstrated bulk and thin film NaSICON separators Developed water-compatible NaSICON separators with improved alkaline stability (enables Na-air batteries) Safety protocol established for sodium batteries 100 Wh, 120°C, NaI/AlCl3 battery 100 Wh NaSICON TubePDF Image | Sodium-Based Battery Development DOE
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