Spinel type lithium nickel manganese oxide battery

A technology of lithium nickel manganese oxide and spinel type, which is applied in the field of spinel lithium nickel manganese oxide battery, can solve the problems of poor chemical performance and safety performance, achieve qualified safety performance, facilitate intercalation and deintercalation, The effect of improving safety performance

Inactive Publication Date: 2017-05-31
湖南锂顺能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art, solve the problem of poor electrochemical performance and safety performance of the existing spinel lithium nickel manganese oxide battery, and provide a spinel lithium nickel manganese oxide battery

Method used

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  • Spinel type lithium nickel manganese oxide battery
  • Spinel type lithium nickel manganese oxide battery
  • Spinel type lithium nickel manganese oxide battery

Examples

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Embodiment 1

[0024] Positive electrode slurry:

[0025] Lithium nickel manganese oxide LiNi 0.5 mn 1.5 o 4 : polyvinylidene fluoride: oily carbon nanotube: SP type conductive carbon black = 93.0%: 4.5%: 1.5%: 1.0%. Prepare polyvinylidene fluoride and positive electrode slurry solvent N-methylpyrrolidone according to the metering ratio, first add N-methylpyrrolidone and then polyvinylidene fluoride, so that the concentration of polyvinylidene fluoride is 5.0wt%; revolution 40rpm, rotation 300rpm stirring After 15 minutes of scraping, carry out normal stirring, revolution at 45rpm, rotation at 2400rpm and vacuum stirring for 3 hours; add oily carbon nanotubes and SP-type conductive carbon black according to the metering ratio, revolution at 45rpm, rotation at 500rpm, stir for 20min, revolution at 55rpm, rotation at 2400rpm, vacuum Stir for 2 hours; add lithium nickel manganese oxide LiNi according to the metering ratio 0.5 mn 1.5 o 4 , revolution at 55rpm, rotation at 2400rpm and stirr...

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Abstract

The invention discloses a spinel type lithium nickel manganese oxide battery, wherein the positive pole comprises 92.0-95.0% of lithium nickel manganese oxide LiNi0.5Mn1.5O4, 3.0-6.0% of polyvinylidene fluoride, 1.5-2.5% of oily carbon nano tubes and 0.5-1.0% of SP type conductive black; and the negative pole comprises 90.0-94.0% of nano-scale mesocarbon microbeads, 1.0-2.0% of sodium carboxymethylcellulose, 3.0-6.0% of an adhesive, 0.3-1.0% of SP type conductive black, 0.5-1.8% of C45 type conductive black and 1.2-2.4% of KS-6 type conductive graphite. The spinel type lithium nickel manganese oxide battery disclosed by the invention can reach a working voltage of 4.73V, can be continuously charged and discharged at a room temperature of 5 DEG C, has a capacity retention ratio of higher than 85% after 1000 times of cycle and meets the service requirements of small electric tools, aviation, spaceflight and new energy automobile.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries, and relates to a spinel lithium nickel manganese oxide battery. Background technique [0002] Since the commercialization of lithium-ion battery products in the 1990s, they have achieved great success in digital cameras, mobile phones, portable tools, power tools and other fields, but when social development needs to expand and popularize this success to more application fields At the same time, the existing key materials and technologies of lithium-ion batteries will inevitably expose a series of problems. Aiming at various problems in the actual application of various existing cathode materials of lithium-ion batteries, as well as the safety and electrochemical performance of new-generation lithium-ion battery materials in the fields of power batteries, energy storage batteries, and starting batteries High-potential lithium nickel manganese oxide cathode material is the most prom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/505H01M4/525H01M4/587H01M10/0525H01M10/0567
CPCH01M4/362H01M4/505H01M4/525H01M4/587H01M10/0525H01M10/0567Y02E60/10
Inventor 何鹏飞沈智郑拥军肖毅
Owner 湖南锂顺能源科技有限公司
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