PI Solid-state Battery Separator Solid Electrolyte Separator Lithium-ion Battery High Temperature Resistant Heat Stable Polyimide

Product Overview​​

Xwell Research's polyimide (PI) separators are high-performance membranes designed for next-generation battery systems, including solid-state and sodium-ion batteries. With exceptional thermal stability (-160°C to 350°C) and optimized porosity (42%), these separators enable safer and more efficient energy storage solutions for research laboratories and industrial applications.

Key Specifications​​

Material Advantages​​

1. ​​Extreme Temperature Performance​​

   • Stable operation from ​​-160°C to 350°C​​ (surpassing conventional PP/PE separators)
   • No thermal shrinkage at high temperatures

2. ​​Mechanical Robustness​​

   • Superior puncture resistance (​​400g​​) for lithium metal anode compatibility
   • Balanced MD/TD tensile strength (94/64 MPa)

3. ​​Electrochemical Optimization​​

   • 42% porosity enables ​​5% higher electrolyte absorption​​ vs. standard separators
   • Low impedance for high-rate applications

Handling & Processing Guidelines​​

1. ​​Pre-Treatment​​
   • Bake at >100°C for 2-3 hours (moisture removal)
2. ​​Cell Assembly​​
   • Maintain winding tension <0.5N to prevent stretching
3. ​​Electrolyte Filling​​
   • Use 5% more electrolyte than conventional separators
4. ​​Formation Protocol​​
   • Add 2 extra charge-discharge cycles post CV/CC formation

​Packaging & Storage​​

Applications​​

• ​​Solid-State Battery Research​​
• ​​Sodium-Ion Battery Development​​
• ​​High-Temperature Battery Systems​

GUANGDONG XWELL TECHNOLOGY CO., LTD. is a high-tech enterprise specializing in intelligent equipment design, production and sales, providing mechanical engineering technology design and consulting services, electronic engineering design and consulting services. XWELL's core team was established in 2010 and officially established in June 2014. XWELL relies on South China University of Technology(SCUT), and the core team is composed of several doctors and masters from SCUT.

XWELL's main products are battery production line machines, such as spot welding machine, battery sorting machine, battery sticking machine, battery capacity grading machine, battery charge and discharge aging machine, battery general testing machine, and so on. The main application areas are new energy lithium batteries, automobiles and other industries, Especially in the fields of new energy, automotive wiring welding and other fields, XWELL has accumulated rich engineering experience and mastered a full set of core technologies, and can provide customers with a complete set of services from technology to equipment, helping customers to establish efficient and reliable production lines in the shortest time .