High nickel anode material, preparation method thereof and lithium ion battery

A cathode material, high nickel technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of poor battery safety and thermal stability, reduced battery electrochemical performance, damage to the crystal structure of the material surface, etc. Effects of chemical stability and safety, good electrochemical stability and safety, good capacity and cycle performance

CN105070907AActive Publication Date: 2015-11-18湖北容百锂电材料有限公司

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Patent Information

Authority / Receiving Office: CN · China
Current Assignee / Owner: 湖北容百锂电材料有限公司
Publication Date: 2015-11-18

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Abstract

The invention provides a high nickel anode material, which comprises a base body and a coating layer, wherein aluminum (Al), titanium (Ti), magnesium (Mg), zirconium (Zr), calcium (Ca), zinc (Zn), boron (B), fluorine (F), vanadium (V), strontium (Sr), barium (Ba), yttrium (Y), neodymium (Nd), caesium (Cs), tungsten (W), molybdenum (Mo), ruthenium (Ru), rubidium (Rb) or lanthanides are mingled on the surface of the base body, the coating layer is coated on the surface of the base body, and comprises one or more of the magnesium, the titanium, the zirconium, the fluorine, the boron, the aluminum and phosphate. The elements are mingled on the surface of the base body of the high nickel anode material, the mingled elements can stabilize a surface crystal structure of the base body, remit damage of washing liquid to a material surface structure of the base body, and enable capacity and cycle performance of a lithium ion battery which is prepared through the high nickel anode material to be better. Furthermore, the high nickel anode material is provided with the coating layer, and the coating layer enables the high nickel anode material to separate from an electrolyte part, and improves electrochemical stability and safety of the high nickel anode material. The invention further provides a method for preparing the high nickel anode material and a lithium ion battery.

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Description

technical field

[0001] The invention relates to the technical field of positive electrode materials, in particular to a high-nickel positive electrode material, a preparation method thereof, and a lithium ion battery. Background technique

[0002] Today, the increasing importance of energy storage technology has made rechargeable lithium-ion batteries (LIBs) gradually occupy a dominant position in the field of electronic consumer power supplies. Lithium-ion batteries have the advantages of high energy storage density, good safety, high charge-discharge rate, low maintenance costs and long service life. Lithium-ion batteries are widely used in daily life.

[0003] In the field of research and application of cathode materials for lithium-ion batteries, layered transition metal oxides have been widely concerned, among which LiCoO 2 It has achieved great success in the application of small lithium-ion batteries, but the safety and thermal stability of this battery are poor, whi...

Claims

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