Restoring Equivalent Capacity following 0-Volt ExposuRe (REC0VER)

The objective, of this research program, is to enable satellite recovery from a dead bus event by advancing a “reversible lithium excessâ€Â approach to 0-Volt stability (Z-Safe) in lithium ion cells. This chemistry agnostic approach will be demonstrated, for the first time, in 18650 cylindrical cells. If successful, this program will result in three domestically manufactured “REC0VERâ€Â lithium ion cylindrical cell chemistries (lithium nickel cobalt aluminum oxide, lithium cobalt oxide, and lithium nickel cobalt manganese oxide) incorporating the “Z-Safeâ€Â technology. These “REC0VERâ€Â line of cells will be capable of recovering from long term storage and transportation at 0-Volt state of charge, and survive satellite dead bus events on orbit. The impact of this program extends beyond Air Force space power systems, and it will help improve the resilience and reliability for all US satellite deployments. This approach provides the US with a mission-enabling capability to maintain a competitive advantage over adversaries.