High Energy Density Lithium-Sulfur Battery with Improved Cycle Life

A high cycle life and high energy density rechargeable battery would address an important need for a reliable power source that offers significant weight reductions in several NASA mission and program applications including energy storage devices for extravehicular activities (EVA), satellites, robots, and spacecraft vehicles. Lithium-sulfur (Li-S) batteries are promising next-generation energy storage devices for NASA missions because of their high theoretical gravimetric energy density of 2500 Wh/kg, which is up to 5 times higher than todayrsquo;s commercial lithium-ion battery cells. However, their use has been limited by poor cycle life caused by dissolution of polysulfide species from the cathode into the electrolyte during cell operation. In Phase II, Giner will build on a successful Phase I feasibility demonstration to scale up its novel, polysulfide-blocking coating technology in prototype Li-S pouch cells that will be validated under test conditions important for NASA planetary mission applications.