正极添加剂、正极极片以及应用
By using a three-dimensional network macromolecular additive containing benzene rings and triazine rings in the positive electrode sheet of lithium-ion batteries, the problem of insufficient adhesion caused by PVDF binders was solved, thereby improving the energy density and cycle performance of lithium-ion batteries.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NINGDE AMPEREX TECHNOLOGY LTD
- Filing Date
- 2023-09-27
- Publication Date
- 2026-07-17
AI Technical Summary
The use of PVDF binder in existing lithium-ion battery cathode sheets results in weak adhesion, affecting cycle life. Furthermore, increasing PVDF reduces energy density, and high compaction density leads to breakage of active materials, while reducing inactive materials decreases conductivity.
A three-dimensional network macromolecular cathode additive containing benzene rings and triazine rings is used. By forming covalent bonds and hydrogen bonds with active materials and binders, it can improve adhesion and cohesion, and enhance electronic conductivity.
It improves the adhesion and cohesion between the positive electrode active material layer and the current collector, reduces the membrane resistance, and enhances the energy density and cycle performance of lithium-ion batteries.
Smart Images
Figure CN117352732B_ABST