High efficiency circular pulping process of Li-ion battery
In the past two years,a high-efficiency circulating slurry system for Li-ion battery has emerged,which is different from traditional mixers and twin screws pulping.To understand the suitable process flow for efficient homogenization systems,lithium iron phosphate slurry with a solid content of 62％and graphite slurry with a solid content of 52％are prepared using dry and wet processes.Compared to the dry process,using the wet process can solve the problem of short-term dissolution of rubber powder and uniform mixing of various components.The viscosity of the cathode slurry in the wet process is 10 300 mPa·s lower than that of the dry method.The rebound rate after 10 s of high-speed shear is 3.6％higher than that of the dry method,the fineness is smaller than that of the dry method.The internal resistance of the four probes is 0.041 0 Ω·cm lower than that of the dry method,the electrode bonding force is 76.46％higher than that of the dry method.The rebound rate of the anode slurry after high-speed shear for 10 s is 2.2％higher than that of the dry method,the area of the thixotropic ring is 45.5％lower than that of the dry method.According to SEM analysis,the agglomeration of dry process slurry is more severe than that of wet process slurry,further revealing that wet process slurry is more suitable for efficient circulating pulping systems,regardless of the cathode or anode.
circular pulpinghigh efficiencycyclic distributionpowder atomizationmixing of powder and liquidwet processLi-ion battery
万方数据
维普
