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Battery composite material with lithium-rich manganese-based material

A lithium-rich manganese-based, composite material technology, applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problems that the overall capacity cannot meet the requirements of the endurance of electric vehicles, and the capacity and safety performance cannot be balanced, so as to eliminate a large amount of emissions waste water, easy industrial production, and simple synthesis process

Inactive Publication Date: 2016-11-09
宁波嘉宁电池科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing cathode materials have the problem of not being able to balance capacity and safety performance, and the overall capacity cannot meet the requirements of electric vehicles for battery life. It is urgent to develop new cathode materials with high capacity, high safety and low cost

Method used

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Examples

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preparation example Construction

[0019] The battery composite material with lithium-rich manganese-based material in the present invention, its preparation method comprises the following steps:

[0020] (1) Mix the precursor, lithium carbonate and doped modified metal fluoride salt in deionized water to form a mixed salt solution a with a total concentration of transition metal ions of 0.5-5 mol / L, wherein the precursor is (Mn x Ni y co 1-x-y )(OH) 2 , Mn x Ni y co 1-x-y )CO 3 One or two of them, and 0<x<1, 0≤y≤1, 0<x+y≤1; doped modified metal fluoride salts are aluminum fluoride, zirconium fluoride, titanium fluoride at least one of the compounds;

[0021] (2) adding high-molecular organic matter to solution a to obtain solution c;

[0022] (3) Prepare 0.5-5mol / L precipitation complexing agent solution b, add solution b to solution c, then add metered lithium compound solution, stir evenly to obtain mixture slurry; the lithium compound addition meets the step 1. The molar ratio of transition metal i...

Embodiment 1

[0028] The preparation method of the battery composite material with lithium-rich manganese-based materials in this embodiment comprises the following steps:

[0029] (1) Mix the precursor, lithium carbonate and doped modified metal fluoride salt in deionized water to form a mixed salt solution a with a total concentration of transition metal ions of 0.5-5 mol / L, wherein the precursor is (Mn x Ni y co 1-x-y )(OH) 2 , Mn x Ni y co 1-x-y )CO 3 One or two of them, and 0<x<1, 0≤y≤1, 0<x+y≤1; doped modified metal fluoride salts are aluminum fluoride, zirconium fluoride, titanium fluoride at least one of the compounds;

[0030] (2) adding high-molecular organic matter to solution a to obtain solution c;

[0031] (3) Prepare 0.5-5mol / L precipitation complexing agent solution b, add solution b to solution c, then add metered lithium compound solution, stir evenly to obtain mixture slurry; the lithium compound addition meets the step 1. The molar ratio of transition metal ions...

Embodiment 2

[0042] The preparation method of the battery composite material with lithium-rich manganese-based materials in this embodiment comprises the following steps:

[0043] (1) Mix the precursor, lithium carbonate and doped modified metal fluoride salt in deionized water to form a mixed salt solution a with a total concentration of transition metal ions of 0.5-5 mol / L, wherein the precursor is (Mn x Ni y co 1-x-y )(OH) 2 , Mn x Ni y co 1-x-y )CO3 One or two of them, and 0<x<1, 0≤y≤1, 0<x+y≤1; doped modified metal fluoride salts are aluminum fluoride, zirconium fluoride, titanium fluoride at least one of the compounds;

[0044] (2) adding high-molecular organic matter to solution a to obtain solution c;

[0045] (3) Prepare 0.5-5mol / L precipitation complexing agent solution b, add solution b to solution c, then add metered lithium compound solution, stir evenly to obtain mixture slurry; the lithium compound addition meets the step 1. The molar ratio of transition metal ions t...

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Abstract

The invention relates to a battery composite material with a lithium-rich manganese-based material. A preparation method comprises the following steps: (1) mixing a precursor, lithium carbonate and doped modified metal fluoride in de-ionized water to prepare a mixed salt solution a with the total concentration of transition metal ions of 0.5mol / L-5mol / L; (2) adding a macromolecular organic matter into the solution a to obtain a solution c; (3) preparing a precipitating complexing agent solution b with concentration of 0.5mol / L-5mol / L; adding the solution b into the solution c; adding a metered lithium compound solution and uniformly mixing to obtain mixture paste; (4) spraying and drying the mixture paste obtained by the step (3) to obtain a sprayed and dried matter; and (5) roasting the sprayed and dried matter obtained by the step (4) at 700-950 DEG C for 5h-24h, naturally cooling to room temperature and grinding to obtain a finished product. The synthetic material has high purity and stable performances, and industrial production is easy to realize.

Description

technical field [0001] The invention relates to a battery composite material with a lithium-rich manganese base material, belonging to the technical field of lithium batteries. Background technique [0002] As the global energy problems and the environmental problems caused by the massive burning of fossil fuels are becoming more and more serious, the development of electric vehicles that do not depend on fossil fuels and are environmentally friendly has become an important development theme in countries all over the world. Because of its many unique advantages, lithium-ion batteries are regarded as a secondary battery that is most likely to be used in electric vehicles on a large scale. The research on new lithium-ion batteries has become one of the most important research topics in related fields. one. Among the many components that affect the performance of lithium-ion batteries, the positive electrode material that constitutes the battery is the most critical factor tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/505H01M4/525H01M4/58
CPCH01M4/364H01M4/505H01M4/525H01M4/582Y02E60/10
Inventor 王航
Owner 宁波嘉宁电池科技有限责任公司