| 摘要 |
An electrode composite material includes an individual electrode active material particle and a protective film coated on a surface of the particle. A composition of the protective film is AlxMyPO4, AlxMy(PO3)3, or a combination thereof. M represents at least one of Cr, Zn, Mg, Zr, Mo, V, Nb, or Ta. A valence of M is represented by k, in which 0<x<1, 0<y<1, and 3x+ky=3. In addition, a molar ratio of an aluminum element, an M element, and a phosphorous element in AlxMyPO4 or AlxMy(PO3)3 is set by (MolAl+MolMetal):Molp equal to about 1:2.5 to about 1:4, MolAl is the amount of substance of the aluminum element, MolMetal is the amount of substance of the M element, and Molp is the amount of substance of the phosphorous element. A lithium ion battery includes the electrode composite material.
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