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Sagger for lithium battery cathode material and preparation method thereof

A technology for positive electrode materials and lithium batteries, which is applied in the field of saggers for lithium battery positive electrode materials and its preparation, can solve the problems of poor corrosion resistance of saggers, easy pollution of battery raw materials, poor thermal shock stability, etc., and achieve saggers Effect of long life, reduction of corrosion channels, and improvement of corrosion resistance

Active Publication Date: 2017-01-04
苏州博立恒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

[0005] The technical problem to be solved by the present invention is how to overcome the defects of the existing saggers such as weak corrosion resistance, short service life, poor thermal shock stability and easy pollution of battery raw materials after repeated use

Method used

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  • Sagger for lithium battery cathode material and preparation method thereof
  • Sagger for lithium battery cathode material and preparation method thereof
  • Sagger for lithium battery cathode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The invention provides a sagger for positive electrode materials of lithium batteries, which is composed of the following components in weight percentage: 55% of platy corundum, 18.5% of cordierite, 8.3% of aluminum titanate, 10% of pure calcium aluminate cement, α-oxidized Aluminum powder 8%, sodium tripolyphosphate 0.15% and explosion-proof fiber 0.05%.

[0037] The platy corundum includes large-grain tabular alumina and small-grain tabular alumina, the grain size range of the large-grain tabular alumina is 0.2-1mm, and the weight percentage is 40%, and the grain size range of the small-grain tabular alumina is ≤0.088mm, the weight percentage is 15%.

[0038] The cordierite includes cordierite with large particle size and cordierite with small particle size, the particle size range of the large particle size cordierite is 0-0.2mm, and the weight percentage is 10%, and the particle size range of the small particle size cordierite is ≤0.088mm, The weight percentage is ...

Embodiment 2

[0060] The invention provides a sagger for positive electrode materials of lithium batteries, which is composed of the following components in weight percent: 40.3% of platy corundum, 33.1% of cordierite, 15% of aluminum titanate, 5.2% of pure calcium aluminate cement, α-oxidized Aluminum powder 6.12%, sodium tripolyphosphate 0.2% and explosion-proof fiber 0.08%.

[0061] The platy corundum includes large-grain tabular alumina and small-grain tabular alumina, the grain size range of the large-grain tabular alumina is 1-1.5mm, and the weight percentage is 20%, and the grain size range of the small-grain tabular alumina is ≤0.088mm, the weight percentage is 20.3%.

[0062] The cordierite includes cordierite with large particle size and cordierite with small particle size, the particle size range of the large particle size cordierite is 0.2-0.5mm, and the weight percentage is 20%, and the particle size range of the small particle size cordierite is ≤0.088mm, The weight percentag...

Embodiment 3

[0073] The invention provides a sagger for positive electrode materials of lithium batteries, which is composed of the following components in weight percentage: 20% of platy corundum, 44.3% of cordierite, 9.3% of aluminum titanate, 20% of pure calcium aluminate cement, α-oxidized Aluminum powder 6%, sodium tripolyphosphate 0.3% and explosion-proof fiber 0.1%.

[0074] The platy corundum includes large-grain tabular alumina and small-grain tabular alumina, the grain size range of the large-grain tabular alumina is 1.5-2.3mm, and the weight percentage is 10%, and the grain size range of the small-grain tabular alumina is ≤0.088mm, the weight percentage is 10%.

[0075] The cordierite includes cordierite with large particle size and cordierite with small particle size, the particle size range of the large particle size cordierite is 0.5-0.8mm, and the weight percentage is 30%, the particle size range of the small particle size cordierite is ≤0.088mm, The weight percentage is 14...

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Abstract

The invention discloses a sagger for a lithium battery cathode material. The sagger is prepared from, by weight, tabular corundum 20-55%, cordierite 18-45%, aluminum titanate 6-30%, pure calcium aluminate cement 5-20% and alpha alumina micro-powder 6-8%. The invention further discloses a preparation method of the sagger for the lithium battery cathode material. The sagger preparation method adopts a casting molding process, and the defects of poor corrosion resistance, short service life, easy pollution of battery raw materials and the like existing in a traditional mechanical pressing molding process are overcome. Compared with the sagger prepared by adopting the existing mechanical pressing molding process, the sagger has higher bulk density and lower porosity by utilizing the self bonding and good liquidity of the micro-powder, the corrosion channels of the lithium battery cathode material to the fire-resistant sagger at high temperature are decreased, and the corrosion resistance of the sagger is improved.

Description

technical field [0001] The invention relates to the technical field of refractory kiln furniture preparation, in particular to a sagger for lithium battery cathode materials and a preparation method thereof. Background technique [0002] At present, lithium cobaltate and ternary lithium batteries are widely used cathode materials for lithium batteries in China, and most of the cathode materials are produced by high-temperature solid-phase synthesis in refractory kilns. During the synthesis process, bearing Sagger materials for burning are generally cordierite, mullite, quartz and corundum. Among these materials, cordierite composite mullite sagger products are the most widely used. This type of sagger is made of cordierite, mullite, and corundum as raw materials, with some clay and micropowder added as a binder, and pressed into shape under a high-tonnage press. After constant temperature curing, it is fired in a refractory kiln. The product is obtained. Moreover, the aver...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/622
Inventor 刘婷婷陈志达
Owner 苏州博立恒新能源科技有限公司
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