Preparation method of ternary nickel cobalt manganese anode material precursor capable of changing stacking mode of microcrystalline particle

A technology of particle accumulation and positive electrode material is applied in the field of preparation of ternary nickel-cobalt-manganese positive electrode material precursor, which can solve the problems of complicated operation, difficult to meet the existing production and high cost, and achieve high battery capacity, low cost, and guaranteed products. quality effect

Active Publication Date: 2019-03-15
HUAYOU NEW ENERGY TECH (QUZHOU) CO LTD +1
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Problems solved by technology

[0007] The above method is complex in operation and high in cost, will introduce unn

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  • Preparation method of ternary nickel cobalt manganese anode material precursor capable of changing stacking mode of microcrystalline particle
  • Preparation method of ternary nickel cobalt manganese anode material precursor capable of changing stacking mode of microcrystalline particle
  • Preparation method of ternary nickel cobalt manganese anode material precursor capable of changing stacking mode of microcrystalline particle

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[0024] Example 1

[0025] (1) The concentration of nickel, cobalt and manganese metal salt solution is 2mol / L, the concentration of ammonia water is 8-10%, and the concentration of lye is 4mol / L of sodium hydroxide solution; the chemical formula of the nickel, cobalt and manganese precursor is Ni (1-xy)CoxMny(OH)2, where 0.1≤x≤0.2, 0.1≤y≤0.3;

[0026] (2) Improve the structure of the reactor blade: the reactor blade adopts an open turbine 45° oblique blade blade; the diameter of the adjustment blade is 0.5D, and D is the diameter of the reactor; the number of blades is double-layered, and each layer of blades The number of blades is 6; adjust the pitch of the blade layer, the vertical distance between the lower blade and the discharge port at the bottom of the reactor is 0.15L, L is the effective height of the reactor, that is, the horizontal center line of the overflow port of the reactor to the bottom discharge port The vertical distance between the lower blade and the upper bla...

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Abstract

The invention belongs to the technical field of preparation of anode materials for lithium ion batteries, and particularly relates to a preparation method of a ternary nickel cobalt manganese anode material precursor. The preparation method aims at overcoming the defect of the prior art, and provides the preparation method of the ternary nickel cobalt manganese anode material precursor capable ofchanging the stacking mode of a microcrystalline particle, the precursor prepared according to the method has a regularly arranged ordered structure, and a special inner structure of arranging outwards radially from the center of the particle is formed. A paddle structure of a reaction kettle is mainly improved, the local mixing effect is improved by regulating the form, the diameter, and the number of layers of paddles of the reaction kettle, the number of paddles on each layer, and the distance between the layers, the axial circulating and radial shearing capabilities are strengthened, the degree of supersaturation of the local area is reduced, the microcrystalline is arranged directionally, so that the structure stability of the material is improved, the diffusion rate of the lithium ion is increased, the mixed arrangement of the cation is reduced, and the rate capability and the cycling stability of the anode material are better.

Description

technical field [0001] The invention belongs to the technical field of preparation of positive electrode materials for lithium ion batteries, and in particular relates to a preparation method of a precursor of a ternary nickel-cobalt-manganese positive electrode material. Background technique [0002] Environmental protection and energy crisis have become the core factors of sustainable social development. Reducing dependence on fossil energy and developing sustainable renewable energy and energy storage systems are of great significance to improving energy utilization, protecting the environment, and solving energy crises. Lithium-ion batteries are currently the most promising and fastest-growing secondary batteries. With the gradual strengthening of their applications in electric vehicles, mobile devices and other fields, the development of higher-performance lithium-ion batteries is imminent. [0003] Nickel cobalt lithium manganese oxide (NCM) material has the advantages...

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Application Information

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IPC IPC(8): C01G53/00H01M4/505H01M4/525H01M10/0525
CPCC01G53/006C01P2004/03C01P2004/61C01P2006/40H01M4/505H01M4/525H01M10/0525Y02E60/10
Inventor 王孝猛李军军李世辉王小敏张泽斐罗有为雷雪周勤俭陈要忠
Owner HUAYOU NEW ENERGY TECH (QUZHOU) CO LTD
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