Fast charging
High power discharge
Thinner system design
Drop-ion energy density gains
Sepion Power™
Optimized for charging speed and energy density.
Why PIMs Work Differently
Redefining molecular transport across every industry
Standard polymers are flexible: when coated from solution, their chains pack randomly and collapse into dense, amorphous films.
Sepion’s PIM backbone is rigid and angular, so it physically cannot pack densely. The result is a self-assembled porous film with nanoscale size selectivity, made using conventional polymer coating equipment.
0.5–4 nm Pores
Tunable pore size for molecular and ionic selectivity.
Hydrocarbon Feedstocks
Built from simple inputs for scalable polymer production.
Solvent & Electrolyte Compatibility
Stable across aggressive liquid chemistries.
>300°C Stability
Thermal durability for demanding operating environments.
No Glass Transition
A broad processing window without conventional softening limits.
Creating Value Across Industries
Creating Value Across Industries
Unique Tech Platform
unlocks differentiated product lines for multiple high value markets.
Sepion Competitive Advantage
- Low-cost processing
- Robust chemical compatibility
- Atomic-level nanofiltration
- Single-ion conductivity
Technical Validation
Sepion’s platform has progressed from laboratory research to real-world validation
Certification testing and validation through leading energy institutions
Customer pilot programs
Strategic manufacturing partnerships
Ready for deployment at scale
One Platform. Two Products.
Sepion's materials platform enables multiple product architectures
Today we power two commercial products:
Explore Sepion Power™
Extended cycle life
Improved safety
Thermal stability
System level $/kWh savings
Sepion Shield™
Optimized for durability, safety, and long-term stability.
How It Works
At its core, Sepion’s platform reshapes how ions move through the separator layer.
Sepion controls how energy moves inside the battery more precisely than traditional materials allow.
- 1
Molecular Architecture
The polymer structure is engineered to create precise nanoscale pathways.
- 2
Controlled Ion Movement
These pathways allow lithium ions to pass efficiently while blocking harmful metal migration.
- 3
System Performance
The result is improved charging performance, stronger stability, and lower material intensity.
