一种高性能硅碳用沥青基多孔碳的制备方法
High-performance pitch-based porous carbon materials with a hierarchical pore structure were prepared through component separation, structural regulation, and surface modification processes. This solved the problems of uneven pore size distribution and insufficient mechanical strength in the existing technology, and improved the first-efficiency and cycle performance of lithium battery silicon-carbon materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TANYAN TECHNOLOGY SERVICES (WUXI) CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, pitch-based porous carbon materials cannot meet the first-efficiency and cycle performance requirements of lithium battery silicon-carbon materials, and the uneven pore size distribution leads to insufficient mechanical strength, which cannot effectively support the expansion and contraction of silicon particles.
Through an integrated process of component separation, structural regulation, and surface modification, the proportions of aromatics, resins, free carbon, oils, and waxes are precisely controlled. Combined with KOH activation and pitch self-activation, a hierarchical porous structure is formed, and functional groups such as carboxyl and sulfonic acid groups are introduced to improve the mechanical strength and electrochemical performance of the material.
The preparation of high-performance pitch-based porous carbon materials has been achieved, which have good pore size distribution, mechanical strength and electrochemical properties. They can effectively support the expansion and contraction of silicon particles and improve the first efficiency and cycle performance of lithium batteries.
Smart Images
Figure BDA0005536893920000101 
Figure BDA0005536893920000111