Violet Tungsten Oxide for Cobalt-free Lithium-ion Battery

Violet tungsten oxide is a defect state of tungsten oxide with very novel physical and mechanical properties. It is not only used in the chemical industry, but also widely used in automobile manufacturing, mechanical processing, aerospace, chemical battery, electronic information and other fields. 

In cobalt-free lithium-ion battery, violet tungsten oxide is mainly used to prepare new positive or negative electrode materials, which can effectively modify the surface morphology of the original material, thereby enhancing the stability of the product's surface structure and resistance to high and low temperatures.

As we all know, the electrode material will be accompanied by volume expansion/shrinkage in the process of lithium insertion/desorption, and this volume effect often causes the material to break and fail. Therefore, the structural stability of the electrode material during the charge-discharge cycle has a vital impact on the battery's capacity, rate, and cycle life.

WO2.72 powder as a filler can significantly improve the mechanical properties of composite electrode materials. In recent years, domestic and foreign researchers have designed and successfully prepared an electrode material containing purple tungsten ultrafine particles, such as Toshiba, Japan. Regardless of whether it is a positive electrode material or a negative electrode material containing purple tungsten, its volume effect is smaller than that of similar materials, and it has the characteristics of stronger mechanical stability. In this way, it also shows that the cobalt-free battery containing WO2.72 powder will last longer.

WO2.72 powder is used as an additive for electrode materials, in addition to improving the structural stability of the product, it can also enhance the high and low temperature resistance of the material.

Temperature is the most feared "thing" of lithium-ion batteries. Whether it is high temperature or low temperature, they will seriously affect the battery's capacity, life and other performance.

According to the above introduction, it is necessary for a cobalt-free battery to use electrode materials containing WO2.72 powder as one of them.

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