Composition for battery electrodes

1. A process for obtaining an electrode, comprising:

depositing a composition onto an electrical current collector,

wherein the composition comprises:

at least one solvent comprising:

N-methylpyrrolidone (NMP) in a amount of between 80% and 98.99% by mass, limits inclusive;

water in an amount of less than 1% by mass; and

at least one compound bearing at least one y-butyrolactam or y-butyrolactone ring, NMP excluded, where the at least one compound is present in an amount ranging from 0.01% to 19% by mass, limits inclusive,

wherein the at least one solvent is present in an amount of greater than or equal to 50% by mass relative to the composition, and is obtained by recovering NMP vapors in the presence of air at temperatures above 120° C.;

at least one electron conductor in solid form in an amount of greater than 0 but less than or equal to 50% by mass relative to the composition;

an active filler; and

at least one polymer, and

evaporating off the at least one solvent.

2. The process as claimed in claim 1 , wherein the composition further comprising a free-radical generator.