Abstract: The present invention discloses a positive-electrode material, a positive-electrode plate, a sodium-ion battery, manufacturing methods therefor, and uses thereof. The positive-electrode material of the present invention presents an O3 phase and has a chemical formula of NanMn1-x-y-zMxZnyLizO2; where M is at least one of Cu2+, Ni2+, Cr2+, Fe3+, and Co2+; wherein, 0.5?x?0.6, 0.05?y?0.1, 0.005?z?0.05, 0.9?n?1.1, and x, y, z, and n meet a principle of electroneutrality numerically; and in the NanMn1-x-y-zMxZnyLizO2, all the element Zn is located at a site Wyckoff 3b in a form of Zn2+, and all the element Li is located at a site Wyckoff 4c in a form of Li+. Mn serves as a basic framework of a core material of the positive-electrode material, and an active element M is doped at the side of Mn to provide capacity.

Abstract: A doped manganese-based Prussian white positive-electrode material, a preparation method therefor, and use thereof are provided. The doped manganese-based Prussian white positive-electrode material of the present invention has a chemical formula of Nan-dAdMn1-xMx[Fe(CN)6]y·zH2O, where A is one or more of Li+, K+, Rb+, Cs+, NH4+, Cu+, or Ag+; M is one or more of Ni2+, Fe2+, Co2+, Zn2, or Cu2+; and 1.7?n?2, 0.02?d?0.2, 0.2?x?0.4, 0.9?y<1, and 0<z<0.8.