Fumed silica is widely utilized in battery applications. It plays a crucial role in mitigating issues commonly encountered during battery operation, such as thermal runaway, uneven electrolyte distribution, and acid stratification. Moreover, fumed silica enhances the battery’s discharge resistance, boosts its capacity, and extends its overall lifespan.
Why add fumed silica to the Battery?
performance of fumed silica in Batteries
Thickening and Thixotropic behavior
Adding fumed silica increases the viscosity and consistency of the battery gel/electrolyte, forming a structured network with thixotropic behavior. It thickens upon charging and thins during discharge. This thickening and thixotropic behavior greatly enhances the performance of the colloidal system, effectively improving the battery’s performance and significantly extending its lifespan.
Fumed silica exhibits high chemical inertness, which means it does not undergo chemical reactions. This property helps maintain the stability of the battery, thereby prolonging its lifespan.
Fumed silica is a high-purity material that is non-toxic, harmless, and free from contamination. It has no adverse effects on the stability, power, and lifespan of the battery.
|Benefits and Functions
|Thickening and thixotropic behavior of HIFULL fumed silica maintains desired viscosity during cycles
Enables sealed cyclic reactions without maintenance
Enhances battery lifespan and stability
Increases charge-discharge cycles
|Improves energy density and capacity
Extends battery lifespan
Enhances cycling performance
Increases heating rate and charging efficiency
|Enhances gel strength
Improves battery cycling lifespan
Significantly increases grouping rate
|Controls uniform distribution and dense deposition of lithium ions
Maintains stable electrolyte ion concentration
Suppresses side reactions
Increases number of discharge cycles
Fumed Silica Grade Recommendation for Batteries
- White nanoparticle size powder
- High purity
- High specific surface area（140 – 400㎡ /g）
- Applicable to water-based and oil-based chemical products
- Recommended Dosage: 1-4wt%
- Recommended HIFULL products for silicon rubber application:
- Hydrophilic Grades: HL-200,
Our main products are fumed silica SiO2, fumed titanium dioxide TiO2, and fumed alumina Al2O3. We get 20+ years of expertise and 20,000 tons of annual capacity. We supply total of 23 grades of hydrophilic & hydrophobic fumed silica. We get registration of REACH and pre-registration of K-REACH & KKDIK. We are the leading setting body of ISO18473-1:2015, ISO18473-3:2018, and ISO 23157:2021. Learn More About Hifull