CPC H01M 4/136 (2013.01) [C01B 25/45 (2013.01); H01M 4/366 (2013.01); H01M 4/5825 (2013.01); H01M 10/0525 (2013.01); H01M 10/425 (2013.01); H01M 2004/028 (2013.01); H01M 2010/4278 (2013.01); H01M 2220/20 (2013.01); H01M 2220/30 (2013.01); Y02E 60/10 (2013.01); Y02T 10/70 (2013.01)] | 11 Claims |
1. A method for manufacturing a positive electrode active material of a lithium-ion battery, comprising the steps of:
dissolving a lithium compound in a solvent to form a solution containing lithium;
dissolving a phosphorus compound in a solvent to form a solution containing phosphorus;
dissolving an M(II) compound in a solvent to form a solution containing M(II), wherein M(II) is one or more of iron(II), manganese(II), cobalt(II), and nickel(II);
mixing the solution containing lithium and the solution containing phosphorus to form a first mixed solution in an air atmosphere;
adding the solution containing M(II) dropwise to the first mixed solution while stirring the first mixed solution so as to form a second mixed solution in an air atmosphere;
putting the second mixed solution into a container resistant to heat and pressure;
heating the second mixed solution;
cooling the second mixed solution; and
obtaining a solid by filtration of the cooled down second mixed solution.
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