| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve dispersibility of a positive electrode material and a conductive subsidiary material (carbon powder) and make an initial capacity of a positive electrode of a nonaqueous lithium secondary battery and discharging rate characteristics better than a conventional one. <P>SOLUTION: A positive electrode active material, a conductive subsidiary material (carbon powder), a solvent and a binder are mixed to make up a slurry, which is spray dried to obtain a complex material of the positive electrode active material and the conductive subsidiary material. The spray drying is made at 100 to 350°C by a spray dryer, which makes up a complex material with the positive electrode active material held around the carbon powder. Then, after a solvent with a binder dissolved in it is added to and kneaded with the complex material, it is coated on and pressed to a metal foil and dried to make up a positive electrode. <P>COPYRIGHT: (C)2003,JPO |
