Positive plate of sodium-ion battery and preparation method of positive plate

The invention provides a positive plate of a sodium-ion battery, which is low in cost and is green and environmentally friendly. The positive plate only utilizes less water solvent so that the production cost of the sodium-ion battery can be reduced when being compared with that of an NMP (N-methyl-pyrrolidone) oil homogenization and coating process which is commonly utilized at present; the emission of organic gas can be reduced and environment protection is facilitated. Meanwhile, all performance parameters, such as initial efficiency and cycle life, of the battery manufactured by the positive plate of the sodium-ion battery are excellent. 本发明提供种低成本、绿色环保的钠离子电池正极片。由于该正极片仅使用了少量水系溶剂，与目前普遍采用的NMP油系匀浆涂布工艺相比，可降低了钠离子电池的生产成本，并且可以减少有机气体排放，有利于环境保护。同时采用本发明提供的钠离子电池正极片制造的电池各项性能参数如首次效率、循环寿命等均表现优异。