High Energy Density, Fast Discharge Li-S Batteries for Electrified Aircraft Propulsion

NASA has set a U.S aviation goal to achieve net-zero greenhouse gas emissions by 2050. SOA Li-Ion batteries are limited to ~300 Wh/kg at the cell level, which is further reduced when integrated into a battery pack. To enable widespread electrified aircraft propulsion, NASA has identified the need for novel energy storage solutions which can provide high energy density (>400 Wh/kg at the system level), high-rate discharge (2C), fast charge capability, operation at 100 °C and the incorporation of passive safety components to prevent thermal runaway. Giner’s solution is a Li-S battery approach. These batteries have projected cell energy densities 600-700 Wh/kg. In the Phase I, Giner has paired a novel cathode design with high temperature electrolytes and passive safety components to demonstrate safe operation at 100 °C (100% of room temp capacity), 2C discharge, fast charge in 15 minutes, and high sulfur loadings to enable high energy density (> 400 Wh/kg) in the Phase II. Phase II funds will be used to scale our technology to market ready size and demonstrate performance in-house. Giner will partner with Aurora Flight Sciences, an uncrewed aircraft developer, for battery pack integration and battery performance demonstration in a drone flight profile. The target market for this technology MW-class passenger aircraft. Our near-term market is uncrewed systems including Group I and II drones, as well as small passenger aircraft including air taxis.