Negative electrode, composite structure and preparation method thereof, solid-state battery and vehicle
By using a first electrolyte layer with a porous structure in the negative electrode of the solid state battery and filling the alloy material, and setting a connecting metal layer at the interface, the problem of poor contact between the metal lithium anode and the solid state electrolyte is solved, and the performance of the battery is significantly improved.
Patent Information
- Application Number
- CN202510124097.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2025-03-25
AI Technical Summary
In solid-state batteries, poor interface contact between the metal lithium negative electrode and the solid electrolyte results in a decrease in lithium ion transmission efficiency and poor performance.
The first electrolyte layer with a pore structure is adopted, and the pores are filled with a first alloy material including lithium, tin and indium, to increase the contact area between the lithium metal and the electrolyte, and to promote the interface contact between the second electrolyte layer and the negative electrode by connecting the metal layer.
It improves lithium ion transmission efficiency, increases electrochemical reaction sites, reduces volume expansion, inhibits side reactions, and improves the rate performance and cycling performance of the battery.