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Lithium ion battery positive electrode material and preparation method thereof

A positive electrode material and lithium battery technology, applied in battery electrodes, lithium batteries, non-aqueous electrolyte batteries, etc., can solve the problems of poor drying uniformity and poor stability of finished batteries, and achieve high specific capacity, uniform particles, and good conductivity. Effect

Inactive Publication Date: 2018-04-13
安徽智森电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lithium battery cathode materials that have been marketed at present include lithium cobalt oxide, lithium manganese oxide, lithium iron phosphate, and ternary materials. However, they have the disadvantage of poor drying uniformity, which leads to poor stability of the finished battery.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A lithium battery cathode material, which is made up of the following raw materials in parts by weight:

[0022] Lithium hydroxide 110, manganese sulfate 30, cobaltous oxide 6, conductive adhesive solution 3, zinc oxide 9, sodium carboxymethyl cellulose 0.2, stannous sulfate 0.1.

[0023] Described conductive bonding liquid is made up of the raw material of following weight part:

[0024] Graphite powder 30, triethylamine 2, acetylene carbon black 9, rosin 2, trimethylolpropane 0.2;

[0025] The preparation method comprises the following steps:

[0026] (1) Take graphite powder, add it to 98% sulfuric acid solution that is 18 times its weight, increase the temperature to 35-40°C, ultrasonicate for 20 minutes, filter, wash the precipitate with water, dry at room temperature, mix with triethylamine, add Add to deionized water 15 times the weight of the mixture, heat and stir at 60°C for 2 hours to obtain aminated graphite powder solution;

[0027] (2) Get rosin, heat a...

Embodiment 2

[0034] A lithium battery positive electrode material is composed of the following raw materials in parts by weight:

[0035] Lithium hydroxide 100, manganese sulfate 20, cobaltous oxide 4, conductive adhesive liquid 2, zinc oxide 7, sodium carboxymethyl cellulose 0.1, stannous sulfate 0.08.

[0036] Described conductive bonding liquid is made up of the raw material of following weight part:

[0037] Graphite powder 20, triethylamine 1, acetylene carbon black 6, rosin 1, trimethylolpropane 0.1;

[0038] The preparation method comprises the following steps:

[0039] (1) Take graphite powder, add it to 96% sulfuric acid solution 10 times its weight, raise the temperature to 35°C, ultrasonicate for 10 minutes, filter, wash the precipitate with water, dry it at room temperature, mix it with triethylamine, add it to the mixture 13 times the weight of the material in deionized water, stirred at 50°C for 1 hour to obtain aminated graphite powder solution;

[0040] (2) Get rosin, he...

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PUM

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Abstract

The invention discloses a lithium ion battery positive electrode material. The lithium ion battery positive electrode material comprises the following raw materials based on parts by weight: 100-110 parts of lithium hydroxide, 20-30 parts of manganese sulfate, 4-6 parts of cobalt oxide, 2-3 parts of conductive bonding liquid, 7-9 parts of zinc oxide, 0.1-0.2 part of sodium carboxymethyl celluloseand 0.08-0.1 part of tin sulfate. The positive electrode material prepared by the method has the advantages of uniform particle, high specific capacity, good cycle property and the like, industrial production is easy, graphite powder is processed by triethylamine and is mixed with rosin, the lithium ion battery positive electrode material has better electrical conductivity and is high in viscosity, and the stability of the finished product of the electrode material can be effectively improved.

Description

technical field [0001] The invention belongs to the field of batteries, and in particular relates to a lithium battery cathode material and a preparation method thereof. Background technique [0002] The main constituent materials of lithium-ion batteries include electrolyte, separator materials, positive and negative electrode materials, etc. The positive electrode material occupies a large proportion (the mass ratio of the positive and negative electrode materials is 3:1-4:1), because the performance of the positive electrode material directly affects the performance of the lithium-ion battery, and its cost also directly determines the cost of the battery; the lithium-ion battery It is a new generation of green high-energy battery with excellent performance, and has become one of the focuses of high-tech development. Lithium-ion batteries have the following characteristics: high voltage, high capacity, low consumption, no memory effect, no pollution, small size, small int...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M10/052
CPCH01M4/621H01M4/625H01M10/052Y02E60/10
Inventor 吴雄志李鑫
Owner 安徽智森电子科技有限公司
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