BLOCK COPOLYMER INCLUDING A POLYANION BASED ON A TFSILI ANION MONOMER AS A BATTERY ELECTROLYTE

摘要

The invention relates to a BA diblock or BAB triblock copolymer, in which the A block is a non-substituted poly-oxyethylene chain having a mean molecular weight that is higher than 100 kDa and the B block is an anionic polymer which can be prepared using one or more monomers selected from among the vinyl monomers and derivatives thereof, said monomers being substituted with a (trifluoromethylsulfonyl)imide (TFSI) anion. The invention also relates to the uses of such a copolymer, in particular for preparing an electrolyte composition for lithium metal polymer (LMP) batteries.

主权项

1. A diblock copolymer of the BA type or a triblock copolymer of the BAB type, wherein:
block A is an unsubstituted polyoxyethylene chain having a number-average molecular weight less than or equal to 100 kDa; block B is an anionic polymer that can be prepared from one or more monomers selected from the vinyl monomers and derivatives thereof, said monomers being substituted with an anion (trifluoromethylsulfonyl)imide (TFSI) of the following formula:in which * represents the point of attachment of said anion of formula (I) to said monomer via a covalent bond or a linear alkyl chain having from 1 to 5 carbon atoms.