Battery Separator (PE/PP)
Microporous PE/PP film that isolates electrodes in lithium-ion cells.
Overview
The battery separator is a microporous polyethylene or polypropylene film that electrically isolates cathode from anode while allowing ion transport in lithium-ion cells. It is a cell-construction material, not an electrode. The library has graphite anodes, LFP and NMC cathodes, and lithium — but not the separator. This is the PE/PP porous film, often ceramic-coated, not a structural plastic. Supplied as thin film on reels for cell assembly. Polyolefin chemistry is in principle recyclable; in practice it is recovered via cell recycling streams rather than as a separate auto-part.
Automotive Applications
Similar Materials
Advanced Thermoplastic Resins
Thermoplastic Resin
High-performance thermoplastic resin systems (e.g. PA, PPS, PEEK, PEKK) used for structural and under-bonnet components requiring thermal and chemical resistance.
Advanced Aluminium Alloys (7000 Series)
Aluminium Alloy
High-strength aerospace-grade aluminium alloys offering superior strength-to-weight performance for structural automotive applications.
NMC Cathode
Lithium-Ion Cathode
Nickel-manganese-cobalt lithium-ion cathode active material, distinct from LFP already in the library.
Platinum
Platinum Group Metal (PGM)
A rare, dense precious metal used as a primary catalyst in automotive catalytic converters to oxidise hydrocarbons and carbon monoxide into less harmful emissions.
Properties
Category
Type
Battery Separator
Available Forms
Key Properties
- Microporous PE/PP film
- Ionic conduction, electrical isolation
- Often ceramic-coated
- Distinct from cathode and anode materials
- Not a structural plastic
- Cell-recycling stream