Coatings and coatings comprising single-ion conductor polymers and lithium-ion batteries
By spin-coating a single-ion conductor polymer coating onto the negative electrode surface of a lithium-ion battery, the problems of low dissociation rate and uneven SEI layer of single-ion conductor polymers in lithium-ion batteries are solved, achieving high efficiency, stability and safety of lithium-ion batteries, reducing production costs and facilitating industrialization.
Patent Information
- Application Number
- CN202510023564.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2045-01-07
AI Technical Summary
In existing lithium-ion batteries, single-ion conductor polymers are difficult to dissociate, have low ionic conductivity at room temperature, have complex and costly synthesis processes, and uneven SEI layer leads to uneven lithium deposition, affecting battery performance and safety.
A coating containing a single-ion conductor polymer was used to prepare the single-ion conductor polymer via a mercapto-olefin click reaction under ultraviolet light irradiation. The polymer was then dissolved in a polar organic solvent and spin-coated onto the surface of the negative electrode to form a stable SEI interface, thereby optimizing lithium-ion flux and deposition behavior.
This technology achieves uniform lithium deposition at the negative electrode interface of lithium-ion batteries, reduces the consumption of active lithium in SEI formation, decreases side reactions, improves the cycle stability and safety of the battery, reduces production costs, and facilitates industrialization.