NONAQUEOUS ELECTROLYTE BATTERY

摘要

PURPOSE:To make a cathode active material effective to prevent not only external short circuit but also internal short circuit by using a material for the positive pole active material wherein the material's resistance increases as temperature rises due to heat generation by short circuit of a battery. CONSTITUTION:A strap anode 3 and a strip of a positive pole 2 are wound around through a prescribed thickness of finely porous polyethylene separator 5 between them and the strap positive pole 3 is wound around to give an electricity generating element 8. A material whose resistance increases as temperature rises is used for the positive pole active material. For example, in the case Li2O-Co3O4-Mn2O3 having PTC property is used for the positive pole active material, large short circuit current due to short circuit is limited by the resistance and temperature rise of the battery is suppressed, so that the battery is prevented from being broken. As a result, a excellently stable at the time of battery's short circuit is obtained.