| abstract |
The present invention provides a positive electrode material, its preparation method and application. The positive electrode material includes a positive electrode material substrate, a first coating layer coated on the surface of the positive electrode material substrate, and a second coating layer coated on the surface of the first coating layer. The positive electrode material matrix is a low-cobalt or cobalt-free positive electrode material, the first coating layer is a low-nickel high-cobalt material, and the second coating layer is a titanium-aluminum solid solution. The positive electrode material is used as a positive electrode material for a lithium ion battery, and can improve interface activity, specific capacity, Coulomb efficiency or cycle performance. |