一种复合锂离子筛及其制备方法和应用
By co-doping with lanthanum and zirconium and co-doping with lithium nitrogen and carbon coating, the structural instability of manganese-based lithium ion sieves during lithium ion extraction and insertion cycles was solved, resulting in lithium ion sieve materials with high adsorption capacity and long lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- YANGZHOU POLYTECHNIC INST
- Filing Date
- 2026-05-14
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional manganese-based lithium-ion sieves are prone to manganese dissolution and lattice structure collapse during lithium-ion extraction and insertion cycles, resulting in adsorption capacity decay and shortened cycle life. Furthermore, single-element doping makes it difficult to balance adsorption capacity, ion diffusion rate and structural stability.
A method for preparing carbon-coated materials co-doped with lanthanum and zirconium and co-doped with lithium and nitrogen was adopted. Through hydrothermal reaction and calcination, stable lithium-ion diffusion channels and functional coating layers were formed, enhancing the stability of the crystal structure. During the acid washing process, active sites with high affinity for lithium ions were formed.
It significantly improves the cycle stability and adsorption performance of lithium-ion sieves, alleviates lattice stress, inhibits the dissolution of active components, maintains a high-capacity structure, and enhances the long-term stable operation capability of the material.
Smart Images
Figure CN122183547B_ABST