Composites bodies used as separators in electrochemical cells

US6632561B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Stephan Bauer · Ostercappeln, DE
• Bernd Bronstert · Otterstadt, DE
• Helmut Möhwald · Annweiler am Trifels, DE
• Rainer Blum · Ludwigshafen, DE
• Gerhard Dötter · Ludwigshafen, DE

Key dates

• Filing date: Apr 25, 2001
• Grant date: Oct 14, 2003
• Expiry date: Apr 25, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31725
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A composite comprises at least one layer which includes a composite comprising(a) from 1 to 99% by weight of a solid (I) with a primary particle size of from 5 nm to 100 &mgr;m or a mixture made from at least two solids,(b) from 99 to 1% by weight of a polymeric binder (II) which includes:(IIa) from 1 to 100% by weight of a polymer or copolymer (IIa) which has, along the chain, terminally and/or laterally, reactive groups (RG) which are capable of crosslinking reactions when exposed to heat and/or UV radiation, and(IIb) from 0 to 99% by weight of at least one polymer or copolymer (IIb) which is free from reactive groups RG,where the at least one layer has been applied to at least one second layer comprising at least one conventional separator.