QuantumScape Expands Commercial Roadmap with Osprey, the Open All-Solid-State Platform for Battery Development

SAN JOSE, CALIF. — QuantumScape Corporation (NASDAQ: QS), a global leader in solid-state lithium-metal battery technology, today announced Osprey: its next-generation open platform for all-solid-state batteries. Osprey cells have delivered the world's first public data demonstrating a sulfide-based cathode cycling 1,000 times under just one atmosphere of pressure – an unmatched capability that is necessary for automotive solid-state batteries.

Osprey pairs the QS proprietary ceramic separator and anode-free lithium-metal design with a solid cathode, creating an all-solid-state cell. Osprey builds on the company's QSE platform, and opens new licensing and co-development options for current QS customers and expanding its offering to developers of sulfide-based all-solid-state batteries.

QS technology has demonstrated an enhanced safety profile compared to conventional lithium-ion cells, along with low operating pressure and excellent energy retention. Osprey's all-solid cathode, paired with the proprietary QS ceramic separator, enables additional performance benefits, including faster charging, operation across a wider range of temperatures, and projected energy densities up to ~1,100 Wh/L.

In early testing, Osprey cells have demonstrated:

• Cycle life: 1,000 full charge cycles with ~80% capacity retention under gold-standard testing conditions
• Fast charging: 10% to 80% in five-minutes
• Low pressure: Requires only one atmosphere of pressure
• Cold-weather performance: Operational to less than -20 °C (-4 °F)

More information, including test results and conditions, can be found in a new white paper.

The battery industry has long pursued all-solid-state batteries using sulfide-based electrolytes, but this has yet to result in a commercially viable technology. Sulfides can react with lithium metal, which shortens battery life, and they typically need to be held under high pressure to operate, which is impractical for vehicles and many other applications.

Osprey is conceived as an open platform capable of working with a range of cathode chemistries. QS has tested Osprey with all-solid cathodes developed both in-house and by its automotive customers, laying the groundwork for multiple technology pathways for solid-state battery development.

"Osprey is the result of years of frontier R&D efforts, and we're excited to share it publicly for the first time," said Dr. Siva Sivaram, president and CEO of QS. "The industry has invested heavily in sulfide-based batteries but keeps hitting the same fundamental limits. As the data shows, Osprey can address these limitations. We believe Osprey can unlock the full potential of all-solid-state batteries, and our goal is to make it the leading platform for solid-state battery development."

QS is already working with partners across the automotive industry on development using the Osprey platform. Cells based on the company's QSE platform are shipping to customers today, and Osprey represents its long-term technology solution for all-solid-state battery development.