A kind of composite oxide electrode material and preparation method thereof

A composite oxide, electrode material technology, applied in electrode manufacturing, battery electrodes, circuits, etc., can solve the problems of electrode processing performance to be improved, uneven particle size of solid-phase materials, inability to achieve technical performance, etc., and achieve spherical particle size. Adjustable distribution, good multi-level distribution, and excellent electrochemical performance
CN111933899BActive Publication Date: 2021-11-26SHENZHEN JANAENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN JANAENERGY TECH CO LTD
Publication Date
2021-11-26

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Abstract

The invention relates to a composite oxide electrode material and a preparation method thereof. Its chemical formula A x m y o 2 , 0.4≤x≤1.5, 0.6≤y≤1, A is Li or Na, M is transition metal, said transition metal is two or more, the total doping amount of transition metal is y, in the composite oxide electrode material Each metal element is evenly distributed and has a graded spherical structure. The present invention uses the mechanical force-assisted semi-solid phase chemical method, that is, under the action of mechanical force, with the help of some solvent media, and the slow reaction between the raw materials, while mixing uniformly, the precursor slurry with uniform distribution of various elements is obtained. , and then the slurry is spray-dried to obtain multi-level spherical particles, and finally the electrode material is obtained through high-temperature calcination. The obtained positive electrode material has adjustable spherical particle size distribution, good multi-level distribution effect, high tap density, excellent electrochemical performance, and good slurry processing performance. The method has the advantages of simple operation, easy control of conditions, less dirt, easy handling, wide application range, continuous production and suitability for industrialization.
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Description

Technical field

[0001] The present invention belongs to the field of secondary battery electrode material, including a lithium ion battery and a sodium ion battery transition metal oxide electrode material, involving the preparation method of the electrode material. Background technique

[0002] With the increasing resources of resources and environment, the whole world is working hard to find clean energy solutions that can replace fossil fuels. Including the construction of the energy storage power station to use the power generation of renewable energy such as wind energy, solar energy; simultaneously develop electric vehicles, reduce exhaust emissions and fossil fuel consumption. Secondary batteries (including lithium-ion batteries and sodium ion batteries) are key points to achieve this solution. The lithium-ion battery has advantages over energy, good cycle performance, no memory effect, and has successfully occupied the market of portable electronic products, which is very...

Claims

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