POROUS FILM CARRYING REACTIVE POLYMER FOR BATTERY SEPARATOR, AND MANUFACTURING METHOD OF BATTERY USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a porous film carrying a reactive polymer for a separator having low internal resistance and sufficient adhesiveness between an electrode and the separator suitable for manufacturing a battery with a high rate property, and to provide a manufacturing method of the battery using the porous film carrying the reactive polymer.

SOLUTION: The porous film carrying reactive polymer for the battery separator is formed by making a polymer with a cross-linking property having at least one kind of reactive group selected from a 3-oxetanyl group and an epoxy group react with polycarbonate, and making the porous film as a base material carry the partially cross-linked reactive polymer. The manufacturing method of the battery includes a process of adhering the porous film to the electrode by injecting electrolyte liquid including a catalyst for cationic polymerization in a battery case, after arranging a laminated body of the electrode and the porous film carrying the reactive polymer in the battery case.

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