CERAMIC COATING

Ceramic Coated Separator

Name: Ceramic Coated Separator
Brand: BSF Materials™

Ceramic and boehmite coating options designed for thermal stability, puncture resistance and electrolyte wettability.

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Micron-scale ceramic or boehmite particles uniformly coating a porous separator base film

Coating optionsCeramic or boehmite

Reference base films7, 9, 12 and 16 μmRepresentative classes from supplied technical material

Published structures2, 3, 4 and 2+2 coating codes

Key advantages.

Uniform micron-scale ceramic or boehmite coverage adds a functional mineral interface to the selected base film.

Improved thermal stability

Enhanced puncture resistance

Better electrolyte wettability

Improved battery safety

Boehmite option for lower equipment wear

SOURCE-DOCUMENTED PROFILE

Ceramic and boehmite coating, kept technically distinct.

The supplied literature presents ceramic and boehmite as separate coating modes, then provides a shared six-construction physical-property matrix.

Technical content reproduced from the supplied ceramic / boehmite separator literature, pages 7–8.

COATING MATERIALS

Two coating modes, separate source claims.

Microscopy image of granular ceramic coating particles on separator film — **Ceramic surface morphology**Published ceramic-coating microscopy example.

Ceramic-coated separator

The documented ceramic coating is intended to improve separator thermal stability, puncture resistance and electrolyte wettability.

Thermal stability
Puncture resistance
Electrolyte wettability
Battery safety and service-life support

Microscopy image of angular boehmite particles coating separator film — **Boehmite surface morphology**Published boehmite-coating microscopy example.

Boehmite-coated separator

The boehmite section lists three specific material and process attributes.

Low self-discharge rate
Long cycle life
Reduced equipment wear

PHYSICAL PROPERTIES

Ceramic / boehmite coated-film matrix

Six published constructions combine 7–16 μm base films with ceramic or boehmite coating structures. Finished thickness and all test values are reproduced as printed.

Compare all 6 published configurations

Test item	Dir.	7 μm base`Ceramic / boehmite 2+2`	9 μm base`Ceramic / boehmite 3`	9 μm base`Ceramic / boehmite 2+2`	12 μm base`Ceramic / boehmite 2+2`	12 μm base`Ceramic / boehmite 4`	16 μm base`Ceramic / boehmite 2`
Finished thicknessμm	—	11±1	12±1	13±1	16±1	16±1	18±1
Air permeabilitysec/100 cc	—	200±40	180±40	200±40	230±40	220±40	220±40
Tensile strengthMPa	TD	≥120	≥100	≥90	≥120	≥120	≥130
Tensile strengthMPa	MD	≥120	≥110	≥100	≥120	≥120	≥150
Puncture strengthgf	—	≥450	≥435	≥435	≥600	≥600	≥600
Heat shrinkage120°C · %	TD	≤2	≤2	≤2	≤2	≤2	≤2
Heat shrinkage120°C · %	MD	≤2	≤2	≤2	≤2	≤2	≤2
Heat shrinkage130°C · %	TD	≤2	≤3	≤2	≤2	≤2	≤3
Heat shrinkage130°C · %	MD	≤2	≤3	≤2	≤2	≤2	≤3
Moisture contentppm	—	≤600	≤600	≤600	≤600	≤600	≤600

Coating construction labels are preserved verbatim from the supplied source matrix.

QUALIFICATION CONTEXT

From literature value to qualified grade.

Published matrices support initial comparison. Final specifications remain tied to the selected grade, agreed test method and lot-specific quality documentation.

Application areas

Electric vehicles
Energy storage
High-demand cell platforms

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