| abstract |
Provided is a method for producing a lithium-containing composite oxide for a lithium secondary battery positive electrode having a high volume capacity density, high safety, excellent charge / discharge cycle durability, and low temperature characteristics.n n n General formula Li p N x M y O z F a by firing a mixture containing a lithium source, an N element source, an M element source, and a fluorine source to be contained as needed (Wherein N is at least one element selected from the group consisting of Co, Mn and Ni, and M is at least one element selected from the group consisting of transition metal elements other than N elements, Al and alkaline earth metal elements) 0.9 ≤ p ≤ 1.2, 0.95 ≤ x ≤ 2.00, 0 <y ≤ 0.05, 1.9 ≤ z ≤ 4.2, 0 ≤ a ≤ 0.05 And a N element source powder or a pulverized product thereof, to form a slurry, pulverized as necessary, and then a granulated product obtained by dry granulating the slurry, a lithium source powder, and a fluorine source powder contained as necessary. The mixture to be baked is fired at 700 to 1100 ° C in an oxygen-containing atmosphere. |