Patent ID: 7449033
Filing Date: 2008-11-11
Classification: H01M,Y02E,Y02P,Y10T

Abstract:
1. A method of producing a laminated electrical component incorporating a polymeric electrolyte layer and an electrode material layer comprising the steps of: (i) producing a gelable mixture comprising a crystallisable polymer and an aprotic organic liquid, the liquid not being a solvent for said polymer at a first temperature of 20° C. but being a solvent above 20° C., the ratio of the mass of the polymer to the mass of the liquid being from 1:4 to 2:3 and the mixture having a bulk ionic conductivity at said first temperature and 39 kHz greater than 10 (ii) extruding the mixture through an orifice of defined shape and dimension at a temperature at which it is in the form of a homogenous liquid phase; (iii) contacting the extruded mixture in the liquid phase with an electrode material layer to produce a laminated composite comprising electrode and mixture layers; (iv) compressing the laminated composite formed in (iii) while the mixture is still in the liquid phase by passing the electrode material and mixture through a nip formed between two or more heated rollers whereby an elongate laminated composite of defined thickness is produced; (v) dripping a solvent onto the electrode material at rate matched to the rate of passage through said nip; and (vi) causing the laminate to cool such that the mixture is converted to a solid gel.