Patent ID: 8915975
Filing Date: 2014-12-23
Classification: C08G,H01M,Y02E,Y10T

Abstract:
1. A method for the preparation of a composite electrode comprising: a. a step of pouring onto a composite electrode containing an electrolyte a medium comprising: at least one ionic liquid and optionally, at least one solvent, or at least one polymer or a mixture of at least one solvent and one polymer, said medium also comprising at least one salt selected from the group consisting of lithium, sodium and magnesium, with said medium being present in an amount is sufficient to impregnate pores of said composite electrode and to form a film on the surface of said composite electrode, b. a step of in situ polycondensation of the at least one inorganic molecular precursor or a step of polymerization of the at least one polymerizable monomer or of the mixture of the at least one inorganic molecular precursor and the at least on polymerizable monomer by standing for a duration of up to nine days until an ion-conducting gel is obtained containing an electrolyte of the ionic liquid and the at least one salt and optionally the at least one solvent or the at least one polymer or the mixture of the at least one solvent or the at least one polymer, said ion-conducting gel being situated both within the pores of said composite electrode and as a layer in contact with said composite electrode in order to obtain a continuous matrix between the electrolyte contained within said composite electrode and the electrolyte of the ion-conducting gel situated in contact with said composite electrode, and optionally c. a step of eliminating water until the ion-conducting gel has a water content of less than 50 ppm.