| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of iron lithium phosphate directly synthesizing iron lithium phosphate having practical performance as an active material for a battery without heating to the melting temperature of iron by using only metallic iron as an iron raw material. <P>SOLUTION: The manufacturing method of a positive active material for a nonaqueous electrolyte battery contains a process obtaining iron lithium phosphate by baking a mixture of iron powder having an apparent density of 2 g×cm<SP>-3</SP>or less, a phosphate, and a lithium compound. By this method, reaction proceeds up to the inside of metallic iron particles. Therefore, since metallic iron powder having an average particle size of 20-150 μm can be used, use of fine iron powder having risk of spontaneous ignition is made unnecessary. <P>COPYRIGHT: (C)2008,JPO&INPIT |
