Patent ID: 6589694
Filing Date: 2003-07-08
Classification: C01G,C01P,H01M,Y02E,Y02P

Abstract:
A positive electrode active material composition comprising at least(i) an active material comprising a particulate Li-transition metal composite oxide having (a) an average particle size of 10 &mgr;m-25 &mgr;m and (b) a specific surface area (m2/g) and an average particle size (&mgr;m) that satisfy the following formula: 7&lE;[20/(specific surface areaÃ—average particle size)]&lE;9, (ii) a particulate conductive material having a particle size of not less than 3 &mgr;m and, (iii) a particulate conductive material having a particle size of not more than 2 &mgr;m.