A kind of preparation method for sodium-ion battery positive material manganous acid sodium

The invention discloses a kind of sodium rechargeable battery high-voltage anode material manganous acid sodium Na 2 MnO 3 Method for preparing solid phase.It is characterized in that prepared method is comprised the following steps：By the manganese source compound of certain stoichiometric proportion and sodium source compound, ground and mixed is uniform；The mixture of gained is transferred in tube furnace, under inert gas shielding, room temperature is cooled to after pyroreaction at 400 ~ 700 DEG C；By the grinding of above-mentioned presoma through distilling water washing to neutrality, target product manganous acid sodium is obtained final product after drying water removal grinding.The method disposably adds material, and technological operation is simple, and raw material is cheap and easy to get, and product purity is high, and process control and properties of product all have good reappearance.Prepared Na 2 MnO 3 Material potential plateau is high, shows excellent chemical property, will be the further research of this kind of high-energy-density positive electrode and practical offer new approaches.