一种具有自修复功能膜的复合集流体的制备方法与应用
By constructing a keratin-polyethyleneimine self-healing functional film on the current collector surface of lithium-ion batteries, the problems of lithium dendrite growth and volume expansion were solved, achieving high mechanical strength and self-healing capability, extending battery life and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHENGDU TECH UNIV
- Filing Date
- 2026-05-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing lithium metal batteries face problems of severe volume expansion and uncontrollable growth of lithium dendrites during cycling. Existing protective layers cannot effectively block dendrite growth and lack self-repair capabilities, leading to rapid degradation of battery life.
A self-healing functional membrane was constructed on the surface of a current collector using a keratin-polyethyleneimine composite solution. The high-modulus rigid framework provided by the disulfide bonds within the keratin molecules and the flexible segments and hydrogen bond network of polyethyleneimine were utilized to achieve self-healing of the membrane and physical suppression of lithium dendrites.
It improves the long-cycle stability and mechanical strength of lithium-ion batteries, achieves self-healing function, extends battery life, and reduces costs by utilizing biomass waste.
Smart Images
Figure CN122202178B_ABST