Preparation method of anode material LiNi0.5Mn0.5O2 of battery

A battery positive electrode and molar ratio technology, which is applied to battery electrodes, circuits, electrical components, etc., can solve problems such as difficult to achieve uniform mixing of raw materials, and achieve the effect of simple preparation method, uniform mixing of raw materials, and simplified preparation steps

Inactive Publication Date: 2013-01-09
成都兴能新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the invention is to provide a battery cathode material LiNi 0.5 mn 0.5 o 2 The preparation method solves the problem that the existing preparation method is difficult to achieve uniform mixing of raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Battery cathode material LiNi 0.5 mn 0.5 o 2 method of preparation,

[0019] a. Dissolve nickel nitrate, manganese nitrate and lithium nitrate into deionized water according to the molar ratio of 0.5︰0.5︰1.05 to form a solution, and add NH to the solution 4 NO 3 , NH 4 NO 3 The molar ratio to nickel nitrate is 0.005:1, stir evenly;

[0020] b. The solution prepared in step a is subjected to ultrasonic spray pyrolysis, the ultrasonic frequency is 1.8 MHz, and the pyrolysis temperature is 950° C. to obtain a powder;

[0021] c. Calcining the powder obtained in step b at 700° C. for 12 hours to obtain the finished product.

Embodiment 2

[0023] Battery cathode material LiNi 0.5 mn 0.5 o 2 method of preparation,

[0024] a. Dissolve nickel nitrate, manganese nitrate and lithium nitrate into deionized water according to the molar ratio of 0.5︰0.5︰1.2 to form a solution, and add NH to the solution 4 NO 3 , NH 4 NO 3 The molar ratio to nickel nitrate is 0.05:1, stir evenly;

[0025] b. Perform ultrasonic spray pyrolysis on the solution prepared in step a, the ultrasonic frequency is 2 MHz, and the pyrolysis temperature is 990° C. to obtain a powder;

[0026] c. Calcining the powder obtained in step b at 900° C. for 5 hours to obtain the finished product.

Embodiment 3

[0028] Battery cathode material LiNi 0.5 mn 0.5 o 2 method of preparation,

[0029] a. Dissolve nickel nitrate, manganese nitrate and lithium nitrate into deionized water according to the molar ratio of 0.5︰0.5︰1.1 to form a solution, and add NH to the solution 4 NO 3 , NH 4 NO 3 The molar ratio with nickel nitrate is 0.025:1, stir evenly;

[0030] b. Perform ultrasonic spray pyrolysis on the solution prepared in step a, the ultrasonic frequency is 1.9 MHz, and the pyrolysis temperature is 980° C. to obtain a powder;

[0031] c. Calcining the powder obtained in step b at 890° C. for 8 hours to obtain the finished product.

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PUM

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Abstract

The invention discloses a preparation method of an anode material LiNi0.5Mn0.5O2 of a battery. The preparation method includes the following steps: a, dissolving nickel nitrate, manganous nitrate and lithium nitrate with the molar ratio of 0.5: 0.5: (1.05-1.2) in deionized water to form solution, adding proper amount of NH4NO3 into the solution and evenly stirring the solution; b, performing ultrasound spray pyrolysis on the solution prepared in the step a to obtain powder, wherein the ultrasonic frequency is 1.8-2 MHz, and the pyrolysis temperature is 950-990 DEG C; and c, calcining the powder obtained in the step b for 5-12 hours at the temperature of 700-900 DEG C to obtain finished products. Nitrate of nickel, manganese and lithium serves as the raw materials, and the deionized water serves as the solvent, so that the raw materials are fully mixed in molecular state, the raw materials are evenly mixed by means of ultrasonic spray pyrolysis, and the preparation steps are simplified. The preparation method has the advantages of being even in raw material mixing and simple in preparation method.

Description

technical field [0001] The invention belongs to the field of battery materials, in particular to LiNi battery positive electrode material 0.5 mn 0.5 o 2 method of preparation. Background technique [0002] LiNi 0.5 mn 0.5 o 2 It is a binary layered compound of lithium nickel manganese oxide, which is a positive electrode material for lithium ion batteries. [0003] Although there are many reports about the preparation of LiNi 0.5 mn 0.5 o 2 methods, but most of these studies are in the laboratory stage, and there is no substantial formal production in the market at present. The main reason is that lithium nickel manganese oxide is a composite oxide of three metal elements (lithium, nickel, manganese), and it is difficult to achieve uniform mixing of various raw material components in the synthesis by conventional methods. Contents of the invention [0004] The object of the invention is to provide a battery cathode material LiNi 0.5 mn 0.5 o 2 The preparation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/505H01M4/525
CPCY02E60/122H01M4/505H01M4/525Y02E60/10
Inventor 范未峰关锋王维利符兵沈怡罗皞晨
Owner 成都兴能新材料股份有限公司
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