FutureFlight
Oxis Is Close to Delivering Higher-energy Lithium-Sulfur Batteries for Electric Aircraft
By the fall of 2021, the UK company expects to be making its solid-state Li-S battery cells available for trial applications in aviation and other sectors.
Oxis Lithium-sulfur battery
Oxis Energy has developed new lithium-sulfur batteries that promised improved energy levels for electric aircraft. (Photo: Oxis Energy)

Oxis Energy expects to start delivering its solid-state lithium-sulfur (Li-S) batteries to customers for trial applications in the fall of 2021. The UK company says the technology will offer significantly improved performance for electric aircraft developers, compared with existing lithium-ion batteries.

The first generation of Oxis’s Quasi Solid-State Li-S cells will have a specific energy of 450 Wh/kg and an energy density of 550 Wh/L. The company believes these levels could be boosted to 550 Wh/kg and 700 Wh/L by the fall of 2023, and then to 600 Wh/kg and 900 Wh/L by 2026.