SOLID STATE POLYMER BATTERIES AND METHOD FOR MANUFACTURING THE SAME

摘要

PURPOSE: A present invention relates to a polymer battery. More particularly, it relates to a flat battery, namely, so-called film-like polymer battery having a sheet-like or film-like positive electrode and negative electrode comprising respectively a perforated positive electrode collector and a perforated negative electrode collector which are coated with an active material layer containing a polymer absorbing and retaining a non-aqueous electrolyte, the negative electrode being provided with the positive electrodes on both sides with a film-like separator comprising a polymer absorbing and retaining a non-aqueous electrolyte and interposed between the negative electrode and the positive electrode, said negative electrode, positive electrodes and separators being laminated and integrated. CONSTITUTION: An invention relates to a polymer battery. A thin perforated collector is disposed in flushed state on the outer end surface of the positive electrode active material layer or the collector is embedded in the positive electrode active material layer so that the bottom plane facing the negative electrode is present at the position of 2/3 to 4/5 of the total thickness of the layer from the side facing the negative electrode. The collector of the positive electrode is prevented from peeling off from the positive electrode active material layer and besides the utilization ratio of the positive electrode active material is enhanced.