PROCESS FOR MANUFACTURE OF LITHIUM ION SECONDARY BATTERY

摘要

In a conventional lithium ion secondary battery using an electrolyte solution, a rigid armor can must be used for maintaining electric connection between electrodes, thus raising a problem that miniaturization cannot be realized. This problem is solved by the process for manufacture of a lithium ion secondary battery which is thin and light-weight and may have an arbitrary shape without using any armor can. When the lithium ion secondary battery is to be constituted by adhering an electrode and a separator using a binder resin containing a fluorine-based resin or polyvinyl alcohol as a principal component, the binder resin solution is applied to the separator and left until the fluidity thereof is lowered, and then the separator and the electrode are adhered to each other by bonding and drying. Thus, a battery having high adhesive strength and high ionic conductivity is provided.