Patent ID: 7510803
Filing Date: 2009-03-31
Classification: H01M,Y02E

Abstract:
1. A battery comprising: a cathode; an anode; and an electrolyte, wherein, the cathode has a cathode active material including a lithium composite oxide which contains lithium (Li), at least either cobalt (Co) or nickel (Ni), and oxygen (O), the anode has an anode active material including at least one kind selected from the group consisting of anode materials capable of insertion and extraction of lithium, and lithium metals, the battery charges at 4.25 V or more, a maximum of 1.0 wt % a total amount of lithium carbonate and lithium sulphate impurities in the cathode and the cathode active material, a maximum of 20 ppm of a concentration protic impurities in the electrolyte, and the battery has a discharge capacity within the range of 7.0 to 8.9 mAh.