A New Standard For Battery Safty and Performance
A New Standard For Battery Safty and Performance
A New Standard For Battery Safty and Performance
World’s first mass-produced high-performance polyimide (PI) separator film for safer, longer-lasting, and ultra-fast charging batteries.
World’s first mass-produced high-performance polyimide (PI) separator film for safer, longer-lasting, and ultra-fast charging batteries.
World’s first mass-produced high-performance polyimide (PI) separator film for safer, longer-lasting, and ultra-fast charging batteries.



PROVEN
Polyimide is a time-tested polymer used in aerospace, electronics, and high-heat applications.
SCALABLE
Continuous roll-to-roll manufacturing enables large-volume production at competitive cost per square meter.

SUPERIOR PERFORMANCE
Precisely engineered ionic permeability for maximum battery efficiency, enabling superior performance and reliability.
ENERGY-DENSE
Enables higher energy density batteries through improved thermal management and safety.
PROVEN
Polyimide is a time-tested polymer used in aerospace, electronics, and high-heat applications.
SCALABLE
Continuous roll-to-roll manufacturing enables large-volume production at competitive cost per square meter.
SUPERIOR PERFORMANCE
Precisely engineered ionic permeability for maximum battery efficiency, enabling superior performance and reliability.
ENERGY-DENSE
Enables higher energy density batteries through improved thermal management and safety.
1 OPTIMIZED ION TRANSPORT
high rate charge/discharge
2 EXTREME THERMAL STABILITY
ENHANCED PERFORMANCE
3 ENHANCED CYCLE STABILITY
LONG-TERM RELIABILITY
Optimized Ion Transport
With 50-60% porosity and sub-300 nm pore size, ions move faster across the separator. Combined with <2s electrolyte wetting, the result is high-rate charging and discharging with low internal resistance and exceptional energy transfer efficiency.
-200°C to
0
0
°C+
Extreme Thermal Stability
<0.5% SHRINKAGE
0
0
°C
Exceptional Dimensional Stability
0
0
X
cycle life
vs. Industry Standard (PP/PE/PP) at 3-6C
0
0
C
CHARGE CAPABLE
Maintains Integrity at Extreme Rates
PROVEN
PROVEN
Polyimide is a time-tested polymer used in aerospace, electronics, and high-heat applications.
Polyimide is a time-tested polymer used in aerospace, electronics, and high-heat applications.
SCALABLE
SCALABLE
Continuous roll-to-roll manufacturing enables large-volume production at competitive cost per square meter.
Continuous roll-to-roll manufacturing enables large-volume production at competitive cost per square meter.
SUPERIOR PERFORMANCE
SUPERIOR PERFORMANCE
Precisely engineered ionic permeability for maximum battery efficiency, enabling superior performance and reliability.
Precisely engineered ionic permeability for maximum battery efficiency, enabling superior performance and reliability.
ENERGY-DENSE
ENERGY-DENSE
Enables higher energy density batteries through improved thermal management and safety.
Enables higher energy density batteries through improved thermal management and safety.
1 OPTIMIZED ION TRANSPORT
high rate charge/discharge
2 EXTREME THERMAL STABILITY
ENHANCED PERFORMANCE
3 ENHANCED CYCLE STABILITY
LONG-TERM RELIABILITY
Optimized Ion Transport
With 50-60% porosity and sub-300 nm pore size, ions move faster across the separator. Combined with <2s electrolyte wetting, the result is high-rate charging and discharging with low internal resistance and exceptional energy transfer efficiency.
Optimized Ion Transport
With 50-60% porosity and sub-300 nm pore size, ions move faster across the separator. Combined with <2s electrolyte wetting, the result is high-rate charging and discharging with low internal resistance and exceptional energy transfer efficiency.
Optimized Ion Transport
With 50-60% porosity and sub-300 nm pore size, ions move faster across the separator. Combined with <2s electrolyte wetting, the result is high-rate charging and discharging with low internal resistance and exceptional energy transfer efficiency.
-200°C to
0
0
°C+
Extreme Thermal Stability
<0.5% SHRINKAGE
0
0
°C
Exceptional Dimensional Stability
0
0
X
CYCLE LIFE
vs. Industry Standard (PP/PE/PP) at 3-6C
0
0
C
CHARGE CAPABLE
Maintains Integrity at Extreme Rates
-200°C to
0
0
°C+
Extreme Thermal Stability
<0.5% SHRINKAGE
0
0
°C
Exceptional Dimensional Stability
0
0
X
cycle life
vs. Industry Standard (PP/PE/PP) at 3-6C
0
0
C
CHARGE CAPABLE
Maintains Integrity at Extreme Rates
-200°C to
0
0
0
0
°C+
Extreme Thermal Stability
<0.5% SHRINKAGE
0
0
0
0
°C
Exceptional Dimensional Stability
0
0
0
0
X
CYCLE LIFE
vs. Industry Standard (PP/PE/PP) at 3-6C
0
0
0
0
C
CHARGE CAPABLE
Maintains Integrity at Extreme Rates
Superior High-Rate Performance
Superior High-Rate Performance
Superior High-Rate Performance
Comparative discharge capacity at various C-rates
Comparative discharge capacity at various C-rates
Ancil's advanced separator technology maintains higher capacity retention even at extreme discharge rates compared to conventional separators.
Ancil's advanced separator technology maintains higher capacity retention even at extreme discharge rates compared to conventional separators.
Ancil's advanced separator technology maintains higher capacity retention even at extreme discharge rates compared to conventional separators.
Extended Cycle Life Performance
Extended Cycle Life Performance
Extended Cycle Life Performance
5Ah cell tested at 6C continuous cycling
5Ah cell tested at 6C continuous cycling
Permio™ demonstrates superior cycle stability, retaining significantly more capacity over 100+ cycles compared to industry standards.
Permio™ demonstrates superior cycle stability, retaining significantly more capacity over 100+ cycles compared to industry standards.
Permio™ demonstrates superior cycle stability, retaining significantly more capacity over 100+ cycles compared to industry standards.
Outperforms the Industry Benchmark
Outperforms the Industry Benchmark
PROPERTY
Ancil permio™ Separator
Ancil permio™ Separator
Industry Leading Polyolefin (PP/PE/PP)
Industry Leading Polyolefin (PP/PE/PP)
Thermal Stability (°C)
>400
~150
Modulus (GPa)
>3.94
1.01
Puncture Resistance (gf)
800
360–500
Ionic Conductivity (mS/cm)
>0.30
~0.20
Lithium Transference Number
>0.5
0.37
Shrinkage at 300°C (1hr)
<0.5%
MELTED
*Testing conditions and methodologies follow industry standards. Ancil Permio™ separator demonstrates consistent superiority across all critical performance metrics.
CONTACT US
© ancil INC. 2025
CONTACT
© ancil INC. 2025
CONTACT US
© ancil INC. 2025