Example 2-1 was repeated except that the corresponding materials and process conditions in Example 2-1 were replaced with the materials and process conditions listed in Table 2-1, to obtain a positive electrode material P10.
The positive electrode material P10 had a formula of Li1.03(Ni0.648Co0.152Mn0.200Zr0.006Y0.002W0.002)O2/B2O3+Al2O3.
As mentioned above, the obtained positive electrode material P10 was subjected to extreme water washing and testing for its intrinsic specific surface area and intrinsic pore size. The results were listed in Table 2-2.
As mentioned above, the obtained positive electrode material P10 was used in preparing a lithium ion battery sample, and subjected to the performance evaluation. The results were shown in Table 2-3.