| abstract |
The invention relates to a method of manufacturing a separating membrane in gel form, for an alkali metal ion battery, the method consisting of extruding a mix comprising:n an alkali metal salt, a dinitrile compound with formula N≡C—R—C≡N, in which R is a hydrocarbon group C n H 2n , and n is equal to 1 or 2 and preferably equal to 2, a hot melt support polymer, soluble in the dinitrile compound. |