含有绝缘层于阴极耳上之阴极及含有该阴极之二次电池;CATHODE INCLUDING INSULATING LAYER ON CATHODE TAB AND SECONDARY BATTERY INCLUDING THE CATHODE

摘要

本发明提供一种含有阴极电流收集器、从该阴极电流收集器突出之阴极耳、及在该阴极耳上之涂覆有绝缘材料的绝缘层之阴极，及含有该阴极之二次电池。;由于本发明之阴极含有绝缘层于阴极耳上，本发明可防止当堆叠电极时会因电池变形或在电池制备程序中于电极裁切期间所形成的电极之锐利边缘而发生的内部短路，或可防止因分隔件在高温环境中收缩所导致之阴极与阳极之间的物理性短路。在该阴极用于锂二次电池之情况下，安全性及电池性能之可靠度可显着改善。;Since the cathode of the present invention includes an insulation layer on a cathode tab, the present invention may prevent an internal short circuit which may occur due to cell deformation or sharp edges of electrodes, which are formed during cutting of the electrodes in a preparation process of the battery, when the electrodes are stacked, or may prevent a physical short circuit between the cathode and the anode due to shrinkage of a separator in a high-temperature atmosphere. In a case where the cathode is used in a lithium secondary battery, safety and reliability in battery performance may be significantly improved.