QuantumScape unveiled its Osprey all-solid-state battery platform, replacing the liquid in its cathode with a sulfide solid electrolyte. The cells achieved 1,000 full charge cycles to 80% capacity at one atmosphere of pressure, according to the company.
QuantumScape said this performance at atmospheric pressure marks a departure from competitors in the sulfide camp. Toyota, Samsung SDI, BYD, and Factorial typically require heavy clamping pressure for their sulfide cells to function.
The white paper supporting the announcement describes small, early-stage lab cells. Some of the headline numbers carry important conditions attached to them.