Synthesizing method for dual anode material

A synthesis method and positive electrode material technology, applied in the direction of electrical components, battery electrodes, secondary batteries, etc., can solve the problems of unstable discharge performance, unstable material performance, uneven sintering, etc., achieve excellent processing performance and avoid cation dislocation , the effect of uniform component distribution

Inactive Publication Date: 2014-08-06
SHANDONG GOLDENCELL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the performance of the material made by the above method is unstable, and there are problems such as uneven mixing, uneven sintering, and unstable discharge performance.

Method used

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  • Synthesizing method for dual anode material
  • Synthesizing method for dual anode material

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Experimental program
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Embodiment 1

[0021] A kind of synthetic method of binary cathode material, process step is, the lithium hydroxide (purity is 99.9% LiOH, with Li + 1mol), 46.36g of nickel hydroxide ((Ni(OH) 2 , with Ni 2+ 0.5mol), 130.47g of manganese dioxide (purity is 99.95% MnO 2 , with Mn 4+ 1.5mol in total) was added to the high-energy ball mill with a metal ion molar ratio of 1:0.5:1.5. The grinding medium in the ball mill is zirconia ceramic balls (ball diameter grinding 1mm). The weight ratio of grinding balls to raw materials is 10:1. In a planetary ball mill with revolution and autopropagation, dry the raw material for 10 hours at a revolution speed of 10,000 r / min. After a high-energy grinding process, LiNi can be obtained. 0.5 mn 1.5 o 4 finished product.

Embodiment 2

[0023] A kind of synthetic method of binary cathode material, process step is, the lithium carbonate of 369.5g (purity is 99.98% Li 2 CO 3 , with Li + 10mol), 374.32g of nickel oxide (NiO with a purity of 99.77%, expressed as Ni 2+ 5mol), 1145.32g of trimanganese tetroxide (purity is 99.89% Mn 3 o 4 , with Mn 4+ and Mn 2+ 15mol in total) was added to the high-energy ball mill at a metal ion molar ratio of 1:0.5:1.5. The grinding medium in the ball mill is zirconia ceramic balls (ball diameter milling 10mm). The weight ratio of grinding balls to raw materials is 50:1. In a planetary ball mill with revolution and autopropagation, dry the raw materials for 50 hours at a revolution speed of 5000 rpm, and through a high-energy grinding process, LiNi can be obtained 0.5 mn 1.5 o 4 finished product.

Embodiment 3

[0025] A kind of synthetic method of binary cathode material, process step is, the lithium nitrate (purity is 99.91% LiNO of 345.06g 3 , with Li + 5mol), 232.14g of nickel nitrate (purity is 99.83% Ni (NO 3 ) 2 , with Ni 2+2.5mol), 652.35g of manganese dioxide (purity is 99.95% MnO 2 , with Mn 4+ 7.5mol in total) was added to the high-energy ball mill at a molar ratio of metal ions of 1:0.5:1.5. The grinding medium in the ball mill is zirconia ceramic balls (ball diameter mill 20mm). The weight ratio of grinding balls to raw materials is 100:1. In a planetary ball mill with revolution and autopropagation, the raw material is dry-milled for 100 hours at a revolution speed of 100 rpm. After a high-energy grinding process, LiNi can be obtained. 0.5 mn 1.5 o 4 finished product.

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Abstract

A synthesizing method for a dual anode material comprises the following steps: mixing resolvable lithium compound, nickel compound and manganese compound according to a metal ion molar ratio of 1:0.5:1.5; adding the mixture in a high energy ball grinder, wherein the grinding media in the ball grinder is zirconia balls or alumina ceramic balls, the diameter of the grinding balls is 1-20 mm, and weight ratio between the grinding balls and the raw materials is 10-100:1; conducting dry-process ball grinding on the raw materials for 10-100 hours in the planetary ball grinder provided with revolution and autoroatation at a revolution speed of 100-10000 turns/minute; obtaining finished product of LiNi0.5Mn1.5O4 in the high energy grinding process; the resolvable compounds can be resolved under a temperature below 800 DEG C; the resolvable lithium compound is lithium hydrate, lithium carbonate or lithium nitrate; the resolvable nickel compound is nickelous hydroxide, nickel oxalate, or nickel nitrate; the resolvable manganese compound is manganese dioxide, manganous-manganic oxide, manganese carbonate, or manganese oxalate.

Description

technical field [0001] The present invention relates to a kind of synthetic method of binary cathode material, especially relate to a kind of composition is LiNi 0.5 mn 1.5 o 4 Lithium-ion battery cathode material preparation method. Background technique [0002] At present, lithium-ion battery materials mainly include lithium iron phosphate materials, lithium cobalt oxide materials, lithium manganese oxide materials and ternary materials. The above materials account for the vast majority of lithium-ion batteries in my country. These materials have their own fields of application. In my country Has formed a large-scale industrialization capacity. [0003] In recent years, the spinel-type lithium nickel manganese oxide material LiNi with a discharge voltage platform as high as 4.7V has appeared. 0.5 mn 1.5 o 4 , the material has a three-dimensional lithium ion channel structure, the discharge voltage platform reaches 4.7V, the reversible capacity can reach 130mAh / g (theo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/505H01M4/525
CPCY02E60/122H01M4/505H01M4/525H01M10/0525Y02E60/10
Inventor 关成善宗继月王淑芹陈凡伟
Owner SHANDONG GOLDENCELL ELECTRONICS TECH
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