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Formula for cathode material for lithium battery and preparation process of cathode material

A positive electrode material and manufacturing process technology, applied in the field of lithium battery production and application, can solve the problems of affecting the efficiency of preparation, dispersion of preparation process, high price, etc., and achieve the effect of improving efficiency, improving performance and high working voltage

Inactive Publication Date: 2018-08-14
湖北睿赛新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional lithium battery cathode materials mostly use lithium cobalt oxide as one of the raw materials, but the price of lithium cobalt oxide is high and the source is less, which increases the production price of lithium batteries. At the same time, the preparation process of traditional lithium battery cathode materials is relatively scattered, which affects the preparation s efficiency

Method used

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  • Formula for cathode material for lithium battery and preparation process of cathode material

Examples

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Comparison scheme
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Embodiment 1

[0023] A lithium battery positive electrode material formula, said formula comprising 94 parts of spinel, 3 parts of conductive agent, 3 parts of binder and 3 parts of NMP; a manufacturing process of lithium battery positive electrode material, comprising the steps of:

[0024] (1) Pretreatment of raw materials and preparation of spinel, pretreatment of spinel, conductive agent, binder and NMP respectively;

[0025] (2) Blending of raw materials, dissolution of adhesives and heat treatment of adhesives, simultaneous ball milling of spinel and conductive agent;

[0026] (3) Dispersion and wetting of dry powder. Disperse and infiltrate the dry powder formed after ball milling of spinel and conductive agent. The principle is that the solid powder is placed in the air, and as time goes by, it will absorb part of the air on the surface of the solid Above, after the liquid binder is added, the liquid and the gas begin to compete for the solid surface; if the adsorption force of the ...

Embodiment 2

[0034] On the basis of Example 1, this example refines the composition and manufacturing process of spinel. Spinel containing LiMn2O4 has the advantages of abundant raw materials, easy preparation, environmental friendliness and high working voltage, and further improves the performance of the entire lithium battery. performance.

[0035] A lithium battery positive electrode material formula, said formula comprising 97 parts of spinel, 2 parts of conductive agent, 1 part of binder and 3 parts of NMP; a manufacturing process of lithium battery positive electrode material, comprising the following steps:

[0036] (1) Pretreatment of raw materials and preparation of spinel, pretreatment of spinel, conductive agent, binder and NMP respectively;

[0037] (2) Blending of raw materials, dissolution of adhesives and heat treatment of adhesives, simultaneous ball milling of spinel and conductive agent;

[0038] (3) Dispersion and wetting of dry powder. Disperse and infiltrate the dry ...

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Abstract

The invention discloses a formula for a cathode material for a lithium battery and a preparation process of the cathode material. The formula comprises 94-97 parts of spinel, 1-3 parts of conductive agents, 1-3 parts of adhesives and 1-5 parts of NMP. The preparation process of the cathode material for the lithium battery comprises the following steps of pretreating raw materials and preparing thespinel, and respectively pretreating the spinel, the conductive agent, the adhesive and the NMP; blending the raw materials, dissolving the adhesive and carrying out heat treatment on the adhesive, and carrying out ball milling on the spinel and the conductive agent synchronously; dispersing and soaking dry powder, wherein a principle is that solid powder is placed in the air, the part of air canbe adsorbed on the surface of solid as time goes on, and after the liquid adhesive is added, the liquid and the gas begin to compete with the solid surface, and if the adsorption force of the solid and the gas is stronger than the adsorption force of the solid and the liquid, the liquid cannot be soaked by the liquid; and diluting slurry is diluted. The formula and the preparation process have the advantages of centralized process and high efficiency.

Description

technical field [0001] The invention relates to a lithium battery cathode material formula, in particular to a lithium battery cathode material formula and a manufacturing process thereof, belonging to the technical field of lithium battery production and application. Background technique [0002] Following the progress of society and the popularization of digital products, lithium batteries are gradually being valued by people and widely used in digital products and high-end instrument products as an important power supply source. The voltage platform of lithium batteries is high: the average voltage of a single battery is 3.7V or 3.2V, approximately equal to the series voltage of 3 nickel-cadmium batteries or nickel-metal hydride batteries, it is convenient to form a battery power pack. Compared with batteries, lithium batteries have higher energy density. It has a high storage energy density, which has reached 460-600Wh / kg at present, which is about 6-7 times that of lead...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/505H01M4/62H01M10/052
CPCH01M4/362H01M4/505H01M4/62H01M4/623H01M4/624H01M10/052Y02E60/10
Inventor 朱希平
Owner 湖北睿赛新能源科技有限公司