一种改性碳纳米管 / 炭黑复合导电浆料及其制备方法和应用
By combining modified carbon nanotubes with carbon black, a conductive slurry without dispersants was prepared, which solved the problems of dispersion and sedimentation of carbon nanotubes in lithium-ion battery electrode slurry and improved the conductivity and stability of the battery.
CN116581292BActive Publication Date: 2026-07-17DONGGUAN RUITAI NEW MATERIAL TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DONGGUAN RUITAI NEW MATERIAL TECH CO LTD
- Filing Date
- 2023-03-13
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
In existing lithium-ion battery electrode slurries, carbon nanotubes are difficult to disperse uniformly without dispersants, and tend to agglomerate and settle, affecting conductivity and battery performance.
Method used
A composite conductive slurry without dispersants was prepared by combining modified carbon nanotubes with carbon black and treating the surface of the modified carbon nanotubes with plasma, combined with the steric hindrance effect of carbon black. The viscosity was controlled to prevent agglomeration and sedimentation.
Benefits of technology
This method achieves good dispersion of carbon nanotubes without dispersants, improves the stability and conductivity of electrode slurry, and enhances the electrochemical stability and performance of the battery.
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Figure CN116581292B_ABST
Abstract
本发明涉及锂离子电池技术领域，提供了一种改性碳纳米管 / 炭黑复合导电浆料及其制备方法和应用。本发明提供的复合导电浆料由以下质量百分数的组分组成：改性碳纳米管1～5％；炭黑1～5％；有机溶剂90～98％；所述改性碳纳米管由碳纳米管经过等离子处理得到；所述复合导电浆料的粘度为2000～8000mPa·s。本发明通过对碳纳米管进行等离子处理，提高碳纳米管浸润性，使碳纳米管在无分散剂条件下能够良好分散；通过加入炭黑调整浆料流变粘度，减少碳纳米管分散后团聚的趋势，提高浆料的稳定性。本发明提供的改性碳纳米管 / 炭黑复合导电浆料无需使用分散剂，避免了分散剂与下游应用体系不兼容的问题，提高了体系的电化学稳定性。
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