负极材料加工设备的选择

From the perspective of market competition pattern, the research, development and production of lithium anode materials in the world are mainly concentrated in China, Japan, South Korea and other countries. From the perspective of global enterprise competition pattern, POSCO is the only overseas enterprise among the top 10 negative enterprises with market share in 2021, and the rest are Chinese enterprises. Chinese negative material enterprises have obvious global advantages in terms of industrial chain layout, product performance, cost, etc. In terms of the domestic market, the negative material market presents a pattern of "three big and four small", namely, Betray Putailai and Shanshan Shares, and the four small ones are Shangtai Technology, Zhongke Electric, Dongguan Kaijin and Xiangfenghua. Head manufacturer Betterrare Shanshan shares and Putai accounted for about half of the market share. At present, there is no absolute gap between the "three big" enterprises, and the "four small" enterprises have similar market shares, so they have a strong desire to catch up with the "three big" enterprises. Graphite cathode has been developed for decades, and has always occupied a leading position in the market. The research shows that the energy storage performance of graphite can be further improved. Through the construction of advanced energy SEI, the microstructure and solvation energy are optimized to achieve rapid charging and discharging of graphite anode. Kaiser reported the reversible ultra dense storage of lithium between graphene

bilayers, indicating that the capacity potential of the graphite structure can exceed 372mAh/g. Other literature shows that the reversible formation of high-capacity LiC or Li2C1 in GIC can obtain high-capacity of more than 10000 compounds mAh/g, and the surface and internal nanopores of GIC can produce high-capacity reversible lithium metal storage. Dahn and other Li GICs can realize the reversible deposition of lithium metal, thus improving the capacity. These data show that graphite still has great potential for performance improvement and application prospects in the future advanced lithium ion batteries. However, in order to obtain graphite cathode with higher performance, it is necessary to have a deep understanding of the crystal structure, electronic structure and basic scientific issues involved in the energy storage process of Li GIC, and then adjust its structure to promote the intercalation, storage and diffusion dynamics in Li+graphite, the basic scientific issues involved in the energy storage process. From the perspective of product shipment structure, the proportion of artificial graphite products continued to rise, and the market share rose to 84%; Natural graphite

The proportion decreased, and the market share decreased to 14%. The main reasons are as follows: 1) Driven by the market demand for power and energy storage, artificial graphite has better consistency and circulation than natural graphite, which increases the proportion of artificial graphite; 2) China's major lithium battery enterprises have gradually turned to artificial graphite, further increasing the proportion of artificial graphite shipments.

Zibo Haineng's second generation rammer has a molding density of more than 2.7, and the maximum number of uses of molded products can reach 180 times, with higher production efficiency. It is applicable to more than ten kinds of synthetic and granular materials such as silicon carbide crucible cathode material, pre carbonization, isostatic pressing crucible, silicon carbide recovery material, etc. Different proportions of silicon carbide and other recycled materials can be added to save costs and optimize production capacity.