Slurry compositions for lithium-ion electrical storage devices

A slurry composition comprising:

• (a) a binder comprising at least one fluoropolymer;
• and
• (b) a solvent system comprising:
• (i) a molecule comprising a sulfoxide functional group;
• and
• (ii) a polybasic ester and/or glycol ether;
• wherein the solvent system includes less than 1% by weight of a molecule comprising the structure R1C(═O)NR2R3, wherein R1 is an aliphatic saturated group, that can be linear or branched, having 1 to 6 carbon atoms, and substituted by one or more functional groups comprising —C(═O)OR and —C(═O)NR4R5, R being an alkyl group having 1 to 6 carbon atoms, and R4 and R5 each independently are methyl or ethyl groups, and R2 and R3 each independently are methyl or ethyl groups, based on the weight of the solvent system;
• and
• (c) an electrochemically active material and/or an electrically conductive agent.