| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a positive electrode active material capable of enlarging a specific surface area and enhancing battery capacity characteristics, to provide a manufacturing method of a positive electrode plate, and to provide a manufacturing method of a lithium secondary battery. <P>SOLUTION: The manufacturing method of the positive electrode active material 111 for the lithium secondary battery includes a preparing process for preparing a mixed positive electrode material in which a non-calcined positive electrode material to become the positive electrode active material 111 by calcination and a porosity-promoting compound of which each of its composing elements is gasified and dispersed and which promotes porosity of the positive electrode active material 111 are mixed, and a calcining process for calcining the mixed positive electrode material to obtain the positive electrode active material 111. The porosity-promoting compound preferably contains ammonium salt and hydroxy acid. <P>COPYRIGHT: (C)2011,JPO&INPIT |
