一种钠离子电池正极用复合分散剂及其制备方法
By using a composite dispersant of acrylate terpolymer and amphiphilic polymer, the dispersion problem of sodium-ion battery cathode material was solved, the stability of the slurry and the performance of the electrode were improved, and an efficient conductive path and bonding network were formed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU YITE NEW MATERIAL CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are unable to effectively disperse sodium-ion battery cathode materials, resulting in poor slurry stability, difficulties in electrode processing, and obstruction of ion/electron transport channels. Furthermore, traditional dispersants are prone to flocculation or sedimentation.
A composite dispersant containing an acrylate terpolymer as the main dispersant and an amphiphilic polymer as the secondary dispersant is used. Through cyano anchoring and the interaction of hydrophobic and hydrophilic segments, a stable dispersion interface layer is formed, which improves the dispersibility and stability of the positive electrode slurry.
It significantly reduces the viscosity change rate of the slurry, improves the stability of the slurry, enhances the peel strength of the electrode and reduces the electrode resistance, forming an effective conductive path and bonding network.
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