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The key to high performance of lithium battery cathode material - 99 porcelain alumina crucible

16 November 2021
The 99% alumina crucibles, also known as corundum crucibles, (when the alumina content exceeds 95%, it is usually called corundum crucible) is the current research hotspot of lithium battery cathode materials, and it is also the key to the high performance of lithium battery cathode materials. It should be known that the storage and release of lithium ion energy is realized in the form of the redox reaction of the electrode material, and the positive electrode active material is the most critical core material of the lithium battery. 99% alumina crucible (corundum crucible), because of its high heat resistance, high thermal conductivity, high chemical resistance and other characteristics, has become the key to the high performance of lithium battery cathode materials.



Overview of 99% alumina crucible (corundum crucible)


In order to distinguish between corundum crucibles and high purity alumina crucibles, under normal circumstances, we refer to alumina crucibles with an alumina content of more than 95% as corundum crucibles. It has the characteristics of strong melting resistance, high temperature resistance, acid and alkali resistance, cold and extreme heat resistance, and chemical corrosion resistance. It is suitable for smelting samples of weak alkaline substances such as Na2CO3 without water, but not suitable for smelting strong alkaline and acidic materials.
 

The working principle of 99% alumina crucible (corundum crucible)

 
1. The 99.7% corundum crucible has good high temperature insulation and mechanical strength in a redox atmosphere. It has a large thermal conductivity and a small thermal expansion rate. When the corundum crucible is above 1700°C, it will not react with air, water vapor, hydrogen, carbon monoxide, etc. The 99% alumina crucible (corundum crucible) has a short-term maximum working temperature of 1800°C.
 
2. And 99.35% corundum 1750℃, 1600℃-1650℃. The corundum crucible is in an oxidizing and reducing atmosphere.
 
3. 85% alumina crucible 1350℃ 1290℃, also known as high-aluminum crucible, has good high-temperature insulation and mechanical strength in oxidizing and reducing atmosphere. Its thermal conductivity is large, and its thermal expansion rate is small. And it does not react with air, water vapor, hydrogen, carbon monoxide, etc., and can be used for a long time under the condition of little temperature change in the temperature field. The 85% alumina crucible has a short-term maximum working temperature of 1400°C.

alumina crucibles


In general, 99% porcelain alumina crucible (corundum crucible) is a positive electrode material for lithium-ion batteries with considerable development potential, and it is also a current research hotspot. Because of its high temperature resistance, resistance to explosion, high density, etc., it has not only become the key to the high performance of lithium battery cathode materials, but also welcomed by the industry. It is widely used in laboratories and laboratories for experimental analysis, as well as for make corrosion-resistant and wear-resistant parts.
 
Johncera is an internationally recognized industry leader in the field of advanced ceramics and a alumina crucible supplier, providing customers with professional alumina ceramic and zirconia ceramic solutions. In addition, we also produce high-purity 99.7% Al2O3 alumina crucibles, which have the characteristics of high thermal shock resistance, high thermal conductivity, and high chemical resistance. The maximum operating temperature can reach 1600°C. They are widely used in high-temperature furnaces and smelting. Johncera has won a reputation for quality, stable delivery and customer service, and has become a leader in the field of advanced ceramics.






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