Preparation method of surface-modified positive electrode material
The invention relates to the technical field of lithium ion batteries, and discloses a preparation method of a surface-modified positive electrode material, which comprises the following steps: weighing a nickel source, a cobalt source and a manganese source according to the required stoichiometric...
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| creator | LI AO LYU MING LIU DONGMEI HE BINFANG CHEN JINGBO GAO YUN YANG XIN |
| description | The invention relates to the technical field of lithium ion batteries, and discloses a preparation method of a surface-modified positive electrode material, which comprises the following steps: weighing a nickel source, a cobalt source and a manganese source according to the required stoichiometric ratio, and dissolving in water to obtain a uniformly mixed precursor solution; the lithium-rich manganese-based layered positive electrode material is prepared into a positive electrode, surface oxygen defects and local lattice distortion are formed under the induction of the surface modifier, the electrochemical performance of the lithium-rich manganese-based positive electrode material is improved, the surface modifier is thermally decomposed to generate a reducing atmosphere under a high-temperature calcination condition, and the surface of the lithium-rich manganese-based layered positive electrode material is reduced under the influence of the reducing atmosphere. Lattice oxygen on the surface of the lithium-r |
| format | Patent |
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Lattice oxygen on the surface of the lithium-r</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ELECTRICITY INORGANIC CHEMISTRY METALLURGY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY |
| title | Preparation method of surface-modified positive electrode material |
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