▎ 摘　　要

NOVELTY - Aqueous all-manganese secondary battery comprises single-liquid electrolyte or double-liquid electrolyte, positive current collector, and negative current collector. The single liquid electrolyte comprises hydrogen ion, manganese ion, and special additive for inhibiting water activity. The double-liquid electrolyte comprises anode electrolyte and cathode electrolyte. The positive electrolyte comprises hydrogen ion, and manganese ion. The negative electrolyte comprises hydrogen ion or hydroxide ion. The special additive for inhibiting water activity. USE - Aqueous manganese ion secondary battery. ADVANTAGE - The aqueous all-manganese secondary battery has excellent water activity. DETAILED DESCRIPTION - An aqueous all-manganese secondary battery comprises a single-liquid electrolyte or a double-liquid electrolyte, a positive current collector, and a negative current collector. The single-liquid electrolyte contains hydrogen (H+) ions, manganese (Mn2+) ions and special additive for inhibiting water activity. The double-liquid electrolyte contains positive electrode electrolyte containing hydrogen (H)ions and manganese (Mn2+) ions, and negative electrode electrolyte containing hydrogen (H+) ions or hydroxide (OH-) ions, manganese (Mn2+) ions, and special additives for inhibiting water activity.