Alumina powder for lithium battery separator is primarily used as a coating on the surface of lithium battery separators (or incorporated into the separator substrate) to significantly enhance battery safety and electrochemical performance. This specialized alumina powder directly addresses the critical weakness of polymer separators, which suffer from poor thermal stability. It is an essential component in the manufacture of high-performance, high-safety power lithium batteries and high-end consumer lithium batteries.
Core Benefits
1. Improved Safety:
Heat and Shrinkage Resistance: Alumina has extremely high thermal stability.
Flame Retardancy: Alumina itself is a non-flammable inorganic material, effectively reducing the risk of fire.
2. Improved Electrochemical Performance:
Enhanced Electrolyte Wettability: Alumina powder has good affinity for electrolyte.
Improved Ionic Conductivity: Good wettability means that the separator pores are filled with more electrolyte, providing smoother lithium ion migration channels.
3. Optimized Performance:
The coating can increase the mechanical strength of the separator and reduce the risk of puncture.
The coating can fill some large pores in the base membrane, making the pore size distribution more uniform, which helps improve the consistency of battery production.
Alumina powder specially used for lithium battery separators is mainly used to prepare ceramic coated separators for high-performance lithium batteries. By constructing a layer of inorganic ceramic coating on the surface of its base membrane, the thermal stability of the separator (to prevent thermal runaway caused by high-temperature shrinkage), mechanical strength and electrolyte wettability are significantly improved, thereby greatly enhancing the safety and cycle life of the battery. It is widely used in new energy vehicles, energy storage systems and high-end consumer electronics.
Indicator parameters
| Item | ALPW-LAP |
| SiO2(%) | 0.02 |
| Al2O3% | 99.99% |
| Fe2O3(%) | 0.01 |
| Na2O (%) | 0.02 |
| D50(μm) | 0.5-0.9 |
| SBET(m2/g) | 3-8 |
Alumina powder for lithium battery separator
Alumina powder for lithium battery separator produced by Zibo Xiangrun
The alumina powder for lithium battery separator produced by Zibo Xiangrun has the characteristics of high purity (≥99.99%), regular spherical morphology and narrow particle size distribution, which can significantly improve the thermal stability and electrolyte wettability of the separator, enhance battery safety and cycle life; the company relies on mature technology and strict quality control to ensure low magnetic foreign matter content and excellent consistency of its products, while providing professional technical support and customized services, becoming a reliable partner of many high-end lithium battery manufacturers.
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