method of making li - intercalateable electrodes for a lithium - ion battery by applying a first film onto a first face of an electrically conductive grid , which film comprises a plurality of li - intercalateable particles dispersed throughout a mixture of a polymeric binder and a plasticizer for the binder . thereafter , a film - forming slurry having the same composition as the first film , plus a solvent therefor , is applied to a second face of the grid opposing the first face so as to provide a second film and such that the solvent in the slurry dissolves at least a portion of the first film and promotes solvent bonding of the films with the grid embedded therein . a polymeric backing film treated with plasma and defining a separator is used as a manufacturing process aid , thereby eliminating the step of using a carrier film onto which the electrodes are fabricated and stripping off the carrier and discarding the same . treating the separator with plasma enhances surface energy thereby improving the lamination process of the film - forming slurries to the separator and reducing degradation of the separator .