LOONG & TOP LITHIUM BATTERY ELECTROLYTE
In the lithiumion battery electrolyte industry chain, lithium hexafluorophosphate (LiPF₆) serves as the core electrolyte salt, and its purity directly determines the conductive performance of the electrolyte and the safety of lithium - ion batteries. A leading domestic enterprise with state - owned background, which focuses on key electrolyte materials, ranks among the top 5 in the industry. It is a core supplier for many leading lithium-ion battery manufacturers and has an annual production capacity covering the entire industrial chain of LiPF₆ and its raw material phosphorus pentafluoride (PF₅). Faced with the product purity problem that traditional metal filters fail to solve, LOONG FILTRATION has achieved "zero excess" of metal particles in LiPF₆ products by virtue of its customized perfluorinated material solutions, helping the customer consolidate the competitiveness of its supply chain.
I. Customer Background and Core Filtration Challenges
As a benchmark enterprise in China's ternary precursor sector, the customer plays a key role in the core link of the new energy lithium battery industry chain and adheres to strict product quality standards. However, in the solid-liquid separation process of ternary precursor production, the original filtration configuration of "PP needle-punched felt filter bag + PP pleated filter element" gradually exposed two core bottlenecks, seriously affecting production continuity and cost control
![New Energy _ Perfluorinated Material Solutions Break Through LiPF₆ Purity Bottleneck]( "New Energy _ Perfluorinated Material Solutions Break Through LiPF₆ Purity Bottleneck")
Challenges Customer Facing
During the customer's production process of lithium hexafluorophosphate (LiPF₆) and its raw material (phosphorus pentafluoride, PF₅), the original filtration scheme could not meet the extremely high purity requirements:
• Low Interception Efficiency: The metal felt sintered filter element did not get clogged even after being used for as long as one year, which proves that its impurity interception rate is seriously insufficient.
• Substandard Product Purity: There are too many impurities in the finished LiPF₆ product, especially the excess metal particles, which fail to meet the strict application standards of downstream customers.
II. LOONG FILTRATION's Customized Filtration Solution: Phased Perfluorinated Material Filtration System
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Solutions
In view of the core characteristics of LiPF₆ production, i.e., "strong corrosiveness and high purity requirements", LOONG FILTRATION has launched a phased perfluorinated material solution of "raw material pre - filtration + finished product fine filtration" after continuous testing and product verification:
• Filtration for Raw Material PF₅: The YBF series all - PTFE needle - punched felt filter bags are adopted. With their excellent chemical resistance, they can effectively intercept solid powder impurities in PF₅.
• Precision Filtration for LiPF₆ Solution: The FETV series electronic-grade PVDF framework PTFE folded membrane filter elements are used to ensure the high purity of the final product.
Implementation Effects: Purity, Efficiency, and Stability All Meet Standards
III. Implementation Results:Purity, Efficiency, and Stability All Meet Standards
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Excellent Features
• Up to Standard Product Purity: The content of impurities and metal foreign matters in the finished LiPF₆ product has been significantly reduced, stably meeting the requirements of downstream customers.
• Improved Filtration Efficiency: The PTFE filter bags reduce the burden on subsequent processes, and the large flux characteristic of the folded filter elements improves the filtration efficiency.
• Enhanced Production Continuity: The reliable filtration scheme reduces the risk of production line shutdown caused by substandard quality.
IV. Introduction to Core Products
![YBF Series All - PTFE Needle - Punched Felt Filter Bags]( "YBF Series All - PTFE Needle - Punched Felt Filter Bags")
YBF Series All - PTFE Needle - Punched Felt Filter Bags
Excellent Chemical Resistance: Made of 100% PTFE, it is resistant to high temperatures and strong corrosive gases such as HF and HCl, with no metal impurities precipitated.
Efficient Pre - Filtration: It can effectively intercept solid powders in the PF₅ raw material, reducing the burden on the subsequent acid removal process.
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![FETV Series PVDF Framework PTFE Folded Membrane Filter Elements]( "FETV Series PVDF Framework PTFE Folded Membrane Filter Elements")
FETV Series PVDF Framework PTFE Folded Membrane Filter Elements
All - Fluorine Structure: All components are made of fluorine materials (PVDF framework + PTFE membrane), which can perfectly withstand the HF acid environment and fundamentally eliminate metal pollution.
High Precision and Large Flux: The PTFE membrane provides accurate particle interception, and at the same time, it has a large unit area. The filtration area of a single 10-inch filter element is as high as more than 0.6 m².
Lightweight and Energy - Saving: Compared with heavy metal filter elements, it is easy to assemble and disassemble, and reduces the equipment floor space and cost.
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V. Reviews from Customer
"LOONG FILTRATION's perfluorinated material solution has accurately addressed the core pain points in our LiPF₆ production. Compared with the heavy and inefficient metal filter elements, LOONG FILTRATION's solution is more lightweight and efficient. It is a professional solution that truly understands the LiPF₆ production process."
VI. About LOONG FILTRATION
LOONG FILTRATION is a leading domestic enterprise in high - end fluorine material filtration technology. It focuses on fields with strong corrosion and high purity requirements such as new energy, electronic chemicals, and semiconductors, and provides full-value chain services from "material R & D - product customization - site implementation". Relying on independently developed PTFE and PVDF series filtration products, as well as ISO9001 and semiconductor - grade clean workshop production standards, LOONG FILTRATION has solved purity problems for more than 80 leading enterprises in the industry and has become a trusted partner in fields such as electrolytes and semiconductor wet electronic chemicals.
Facing Filtration Challenges with LiPF6, HF Acid, or other High-Purity Chemicals?
Contact LOONG Filtration today for a customized solution proposal.
EMAIL: sales@l oongfiltration.com
