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New Energy | Precision Filtration Solutions for Lithium Battery Electrolyte

Views: 235     Author: LOONG FILTRATION     Publish Time: 2025-09-22      Origin: Site

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In the highly competitive lithium battery supply chain, electrolyte purity is critical to performance and safety. Learn how a top-tier electrolyte manufacturer in China overcame persistent contamination challenges with LOONG Filtration's filtration technology.


Project Background: A Critical Electrolyte Filtration Challenge


A top-tier Chinese electrolyte producer, a key supplier to major lithium battery manufacturers, faced a severe production bottleneck. With an annual output of 200,000 tons, ensuring ultimate purity was non-negotiable for battery performance and safety. Persistent contamination issues threatened their supply chain reliability, demanding a superior electrolyte filtration solution.

Electrolyte Filtration



Core Filtration Challenges: Metal Particles and Short Filter Life


• Metal Particle Contamination: Consistent exceedance of 50μm+ metal particle limits in filtered electrolyte

• Short Filter Life: Each 10-inch filter cartridge processed only ~2 tons before requiring replacement

•  Non-Metallic Contamination: Ineffective control of fibrous pollutants, compromising product consistency




Quantifiable Results: Doubled Capacity and Superior Purity



In 2023, the client implemented LOONG Filtration's FEP Series Filter Cartridges, specifically designed for high-purity applications in new energy materials.In 2023, the manufacturer integrated LOONG Filtration's FEP Series Filter Cartridges, engineered specifically for ultra-high-purity applications like lithium battery production. The solution offered a direct, drop-in replacement for their existing system.


Quantifiable Results: Doubled Capacity and Superior Purity

PP Filter Cartridge for Lithium Battery


The performance data delivered a clear and compelling ROI:

• Superior Particle Control:

50–100μm particles: <2 counts

25–50μm particles: <600 counts
Exceeded client’s strict quality standard


 Extended Filter Service Life:

Processing capacity increased to >5 tons per 10-inch cartridge

Service life more than doubled versus previous solution


• Eliminated Fiber Shedding:

Special nanofiber material prevents secondary contamination

Consistent retention of non-metallic impurities



Technology Deep Dive: The Engineering Behind the FEP Filter Cartridge


PP Pleated Filter Cartridge Supplier


  • Intelligent Gradient Filtration

Multi-layer gradient structure captures different particle sizes efficiently, maintaining precision while extending service intervals.

  • Nanofiber Technology

Proprietary nanofiber media ensures high particulate retention without fiber shedding – eliminating a key source of contamination.

  • Cost Optimization

Longer life and stable performance reduce replacement frequency and total cost of ownership



Reviews from Customer

“LOONG Filtration's FEP Series filter cartridges not only resolved our metal particle issues but also delivered remarkable durability

 and cost efficiency. They have become a trusted partner in our supply chain.”


Frequently Asked Questions (FAQ)


Q: What are the main filtration challenges in electrolyte production?
A: Electrolytes are corrosive and require compatible materials. Trace metal particle contamination can cause battery failure, demanding near-absolute filtration precision.


Q: How did LOONG's solution double the filter life?
A: Our Gradient Density Filtration design utilizes the entire depth of the filter media, preventing premature surface clogging and maximizing contaminant holding capacity.


Q: Are FEP cartridges compatible with other chemicals?
A: Yes. They are designed for high-purity chemical filtration. Contact LOONG Filtration with your fluid properties for a specific compatibility review.


Q: Can this be retrofitted into existing production lines?
A: Absolutely. As shown in this case, LOONG's standard cartridge sizes allow for direct replacement in most industrial housings.


Q: Do you provide samples for testing?
A: Yes. We recommend and support on-site trials. We can arrange sample FEP filter cartridges to validate performance in your specific process.


Q: What ongoing support does LOONG provide?
A: We offer technical support, performance monitoring advice, and can help optimize your entire filtration protocol for maximum efficiency.


Q: How do you ensure zero fiber shedding?
A: Our Nanofiber Technology uses a bonded media structure that is mechanically robust and inherently non-linting, a critical feature verified in applications like this.


Q: Is the performance data in this case study typical?
A: Results are based on real client data. Performance can vary based on specific conditions. Our engineering team can provide a realistic projection for your operation.


Q: Does LOONG offer solutions for other battery manufacturing steps?
A: Yes. We provide tailored filtration for the entire lithium battery production chain, including electrode slurry and solvent recovery. Inquire about our full range.


Q: How do we start evaluating a solution for our plant?
A: Start with a technical consultation. Contact LOONG Filtration's engineering team to discuss your challenges and solution path.


LOONG Filtration specializes in high-performance filtration solutions for advanced industries including New Energy & Lithium Batteries,Electronic Chemicals,Semiconductor Manufacturing

With strong technical expertise and a rigorous quality system, we support industry leaders with end-to-end services – from material development to on-site application engineering.


Facing Similar Filtration Challenges in Your Battery Production Line?

Contact LOONG Filtration today for a customized solution proposal.

EMAIL: sales@l oongfiltration.com



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