Ca / Sr / Ba doped modified sodium-rich anti-perovskite solid electrolyte material and method
By modifying sodium-rich anti-perovskite solid electrolyte materials with Ca/Sr/Ba doping, the problems of insufficient ionic conductivity and poor mechanical toughness of existing materials are solved, and the structural stability and efficient ion transport performance of the materials are achieved, making them suitable for high-performance solid electrolytes.
Patent Information
- Application Number
- CN202610303932.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-13
- Publication Date
- 2026-06-09
AI Technical Summary
Existing sodium-rich anti-perovskite solid electrolyte materials have insufficient ionic conductivity and poor mechanical toughness, making it difficult to meet the requirements of high-performance energy storage devices. Furthermore, some doping elements can disrupt the lattice stability of the material or cause leakage risks.
A sodium-rich anti-perovskite solid electrolyte material was modified by doping with Ca/Sr/Ba. By replacing some Na atoms with Ca, Sr, and Ba metal atoms, a Pm-3m space group crystal structure was constructed. The lattice parameters and electronic properties of the material were optimized. Density functional theory was used for structural optimization and molecular dynamics simulation to ensure the mechanical stability and ionic conductivity of the material were improved.
It achieves synergistic optimization of material structure and electronic properties, maintains the stability of cubic crystal structure, avoids leakage current, and significantly improves ionic conductivity and mechanical toughness, making it suitable for high-performance solid electrolytes.