Technical Advantages of Silicon-Based Anode Materials

Technical Advantages of Silicon-Based Anode Materials

(1) Stable batch preparation of raw materials: traditional silicon oxygen raw materials have poor quality stability, large silicon oxygen ratio fluctuation, and high energy consumption. Combined with the characteristics of silicon oxygen reaction at high temperature and high vacuum, the continuous batch and stable preparation of silicon oxygen can be realized through innovative furnace design and development, which can effectively ensure the stable quality and improve the cost performance.

(2) Efficient pre-lithium technology: Through the study of the kinetics and mechanism of the pre-lithium reaction, a unique pre-lithium process is designed, the process is mild and controllable, the prepared product pre-lithium uniform, silicon grain size is small, pH control in a reasonable range, and master the conditions for adjusting the structure and proportion of a variety of silicates (Li4SiO4, Li2SiO3, Li2Si2O5). The preparation of materials with specific properties can be realized, and the problem of gas generation in water slurry of pre-lithium materials can be solved.

(3) uniform complete surface cladding technology: the uniformity of surface coated silicon materials, integrity, the profound influence the electrochemical properties of materials, through the effective processing of silicon-based materials morphology neat degrees, in the process of the gas phase coated and applied conditions of temperature and atmosphere control, preparation of silicon-based materials than competing goods have better covered effect.

(4) Through innovative process design, combined with the breakthrough of the above key technologies, our company can achieve silicon grain size < 5nm, first efficiency > 90%, capacity > 1400mAh/g, pH < 10, no gas production in water slurry for more than 120 hours. Ultra-fine grain size ensures low expansion, combined with high initial efficiency to achieve both high energy density and ultra-long cycle performance. Low pH and good water resistance, effectively ensure the processing and application of battery pulping coating process. The energy density > 300Wh/kg and cycle life > 80% were prepared by using 450mAh/g composite graphite as negative electrode and high nickel 811 as positive electrode.