Nickel-cobalt-manganese ternary positive electrode spherical material and preparation method thereof

A nickel-cobalt-manganese and cathode technology is applied in the field of nickel-cobalt-manganese ternary cathode spherical material and its preparation, which can solve the problems of high difficulty in operation and large pollution, and achieve the effects of simple operation process, improved electrical performance, and removal of residual alkali.
CN109873145AActive Publication Date: 2019-06-11HEFEI GUOXUAN HIGH TECH POWER ENERGY CO LTD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI GUOXUAN HIGH TECH POWER ENERGY CO LTD CO LTD
Publication Date
2019-06-11

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Abstract

The invention discloses a nickel-cobalt-manganese ternary positive electrode spherical material and a preparation method thereof. The preparation method comprises the following steps: mixing a nickel-cobalt-manganese ternary precursor, a lithium source, a fluxing agent and nano-mesoporous silica to obtain a mixture; after the mixture is calcined for one time, crushing and classifying the mixture to obtain a grading material; and after the grading material and a fluorine source are mixed and coated, carrying out secondary calcination to obtain the nickel-cobalt-manganese ternary positive electrode spherical material. The fluxing agent, the fluorine source and nano-mesoporous silica are introduced into the nickel-cobalt-manganese positive electrode material, and the nickel-cobalt-manganese ternary positive electrode spherical material containing mesoporous silica is prepared, so that the electrical performance, the stability and the structural stability of the material are improved.
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Description

technical field

[0001] The invention relates to the field of lithium batteries, in particular to a nickel-cobalt-manganese ternary positive electrode spherical material and a preparation method thereof. Background technique

[0002] The electric vehicle industry is booming, and batteries, as one of the core accessories, have received extensive research and attention. Due to the advantages of high energy density, long cycle life and no memory effect, lithium-ion batteries have always been a hot spot in the research and development of batteries, and have good application prospects in portable appliances, electric vehicles and energy storage. Ternary cathode materials have the advantages of high capacity and high energy density and become the current research hotspot of cathode materials. However, ternary material batteries have problems such as poor safety and cycle life, which requires further improvement of ternary materials.

[0003] A preparation method of a fluorine-dope...

Claims

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