QuantumScape Corporation announced Osprey, an open development platform for all-solid-state batteries, on November 11, 2026. The platform combines the company’s proprietary ceramic separator and anode-free lithium-metal design with a solid cathode. QuantumScape said Osprey cells produced public data showing a sulfide-based cathode cycling 1,000 times under one atmosphere of pressure.
Osprey builds on QuantumScape’s QSE platform and is intended to support licensing and co-development with existing customers and developers of sulfide-based all-solid-state batteries. The platform is designed to work with a range of cathode chemistries. QuantumScape has tested it with all-solid cathodes developed internally and by automotive customers.
According to the company, sulfide electrolytes have presented two main technical challenges for all-solid-state batteries. They can react with lithium metal, reducing battery life, and typically require high pressure during operation, limiting their practicality in vehicles and other applications. QuantumScape said its technology has demonstrated low operating pressure, energy retention and an enhanced safety profile compared with conventional lithium-ion cells.
The company said pairing an all-solid cathode with its ceramic separator could also support faster charging and operation across a wider temperature range. QuantumScape projects that Osprey could achieve energy densities of up to approximately 1,100 Wh/L. The stated performance characteristics remain projections, and the company noted that early test results may not be replicated in commercial cell formats or at scale.
QuantumScape is working with automotive partners on development programs using Osprey. Cells based on the QSE platform are currently shipping to customers, while the company positions Osprey as its longer-term technology platform for all-solid-state battery development.
Source: QuantumScape
