Anode-solid electrolyte subassembly for solid-state secondary battery, solid-state secondary battery with anode-solid electrolyte subassembly, and method for producing an anode-solid electrolyte subassembly
Patent Information
- Application Number
- DE602023004070
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2023-09-18
- Filing Date
- 2023-09-25
- Publication Date
- 2025-06-18
- Estimated Expiration
- 2043-09-25
AI Technical Summary
Existing solid-state secondary batteries face challenges in achieving high energy density and stable performance due to thickness changes and volume expansion during lithium deposition, which affects their cycle characteristics and lifetime.
The development of an anode-solid electrolyte sub-assembly that includes an anode current collector, a solid electrolyte with uptake rooms for lithium storage, an interlayer with high ionic and electronic conductivity, and an insulation layer to inhibit lithium deposition outside the uptake rooms, thereby minimizing stress and maintaining battery thickness.
This configuration allows for zero-stress lithium deposition, maintaining battery thickness and improving high-rate characteristics, leading to enhanced energy density and prolonged battery life, potentially increasing energy density up to 800 Wh/L.