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High-end application of nano-zirconia: additive for lithium battery materials

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Time of issue:2022-01-06
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(Summary description)ZrO2, white powder, density between 5.68-6.27g/cm3, melting point is 2715 ℃, one of the important ceramic materials. It has the advantages of low thermal conductivity, high temperature resistance, corrosion resistance, stable chemical properties, etc., and its crystal phase can be stabilized after doping. Pure ZrO2 has three different crystal forms at room temperature. Due to the asymmetry of the crystal structure, the monoclinic phase is not suitable as an electrolyte material, while the cubic fluorite structure of the high temperature phase has a large number of octahedral voids, which are conducive to the transport of oxygen ions. , so it has a higher conductivity. In addition, it is a relatively abundant substance in nature.

High-end application of nano-zirconia: additive for lithium battery materials

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High-end application of nano-zirconia: additive for lithium battery materials

Categories:Company News
Author:
Origin:
Time of issue:2022-01-06
Views:0

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ZrO2, white powder, density between 5.68-6.27g/cm3, melting point is 2715 ℃, one of the important ceramic materials. It has the advantages of low thermal conductivity, high temperature resistance, corrosion resistance, stable chemical properties, etc., and its crystal phase can be stabilized after doping. Pure ZrO2 has three different crystal forms at room temperature. Due to the asymmetry of the crystal structure, the monoclinic phase is not suitable as an electrolyte material, while the cubic fluorite structure of the high temperature phase has a large number of octahedral voids, which are conducive to the transport of oxygen ions. , so it has a higher conductivity. In addition, it is a relatively abundant substance in nature.

It is found that the discharge specific capacity of the electrode materials doped with ZrO2 is significantly improved, which may be related to the smaller particle size of the material after ZrO2 doping. Therefore, the discharge specific capacity of the material after doping increases. With the progress of charge and discharge, a certain amount of dopant ions Zr4+ may also migrate to the electrode surface and form a solid solution, which prevents the structural collapse due to anisotropic structural changes during charge and discharge, and the solid solution also acts as a protective coating to prevent cobalt Dissolved into the electrolyte, therefore, the material structure becomes very stable during the phase transition of the cycling process and the cycling stability is enhanced.

Nano-zirconia is used as an additive in ternary materials (ie, nickel cobalt lithium manganate Li(NiCoMn)O2), lithium cobalt oxide (LiCoO2), lithium manganate (LiMn2O4) and other lithium battery cathode materials, which can significantly improve the battery cycle. Performance, rate performance, etc., are valued by all aspects of industry, academia and research.

The Fe-Mn-based lithium-rich cathode material (1-x) Li2MnO3·xLiFeO2 is a cathode material with great potential for application. But at the same time, the material also has the problems of large irreversible capacity loss for the first time, poor rate performance, and poor cycle stability. ZrO2 has both basic and acidic sites, and as a coating material, it can not only inhibit the corrosion of HF on the cathode material, but also has good structural stability under high operating voltage.

In recent years, with the rapid development of lithium batteries and the continuous deepening of research on solid oxide fuel cells, the application potential of zirconia in batteries has been continuously developed. play an important role.

Chaozhou Fengye Zirconium New Materials Co., Ltd. specializes in providing nano-zirconia for lithium battery materials. At the upcoming 3rd High Specific Energy Solid State Battery Key Materials Technology Conference (February 22-23, 2022, Wuhan), Fengye Zirconium will meet you as scheduled.

The company is a high-tech enterprise specializing in the research, development and production of zirconia series products, covering an area of 60,000 square meters, with an intelligent multi-functional production plant of 28,000 square meters; a 700-square-meter R&D experimental center and a garden-style living area of 10,000 square meters. A large-scale manufacturer that independently completes all production processes from powder production, molding, sintering to fine processing.

The company has introduced advanced molding equipment such as isostatic pressing, casting, gelling, injection, grouting, etc. The high-performance structural ceramic products produced by patented technology are characterized by their high hardness, high temperature resistance, wear resistance, corrosion resistance, electrical insulation, Non-magnetic, light specific gravity and incomparable advantages of metals, widely used in aerospace, nuclear industry, petroleum, chemical, textile, food, medical equipment, machinery and other fields.

Some products of the company are introduced:

(1) Nano zirconia

(2) Nano Scandium Stabilized Zirconia

(3) Yttrium stabilized zirconium powder

Reference source:

Guo Xia. Controllable preparation and ionic conductivity of nano-zirconia-based solid electrolytes

Wang Hui. Study on the synthesis and modification of LiNi0.8Co0.1Mn0.1O2 of high nickel ternary cathode materials for lithium ion batteries

China Powder Network: Unexpectedly, zirconia plays such an important role in batteries

Hu Xinsa. Surface modification and electrochemical performance of nano-lithium-rich Fe-Mn cathode materials

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Next: Fengye Zirconium Industry Feature: Such zirconia products can seize the SOFC industry outlet

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Next: Fengye Zirconium Industry Feature: Such zirconia products can seize the SOFC industry outlet

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Nano-zirconia is used as an additive in ternary materials (ie nickel cobalt lithium manganate Li(NiCoMn)O2), lithium cobalt oxide (LiCoO2), lithium manganate (LiMn2O4) and other lithium battery cathode materials, which can significantly improve the battery cycle. Performance, rate performance, etc., are valued by all aspects of industry, academia and research.

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