人造石墨的粒径分布会影响到负极材料的加工和锂离子电池性能。当选择异丙醇作分散剂,按照数量分布来表征石墨的粒径分布时可以有效识别石墨中是否含有大量小粒径颗粒。当石墨中含有大量小粒径颗粒时,会增加过滤负极浆料的难度,降低生产效率,增加生产成本,同时会影响负极浆料的粘度;而含有大量小粒径颗粒的石墨作原材料制成电池后,电池的高温存储性能及常温循环性能也会受到影响。

The particle size distribution of artificial graphite affects the processing of negative plate materials and the performance of lithium-ion batteries.When isopropanol is selected as dispersant,it can effectively identify whether there are a large number of small size particles in graphite according to the quantity distribution.When there are a large number of small size particles in graphite,it will increase the difficulty of filter negative slurry,reduce production efficiency,increase production cost,and affect the viscosity of negative slurry.The high temperature storage performance and normal temperature circulation performance of the battery are also affected when the battery is made of graphite which contains a large number of small particles.