▎ 摘　　要

NOVELTY - Aqueous sodium ion battery plastic electrode comprises 40-50 wt.% positive-negative active material, 3-10 wt.% conductive material, 0-10 wt.% adhesive, 0-5 wt.% cross-linking agent, 0-10 wt.% humectant, 0-3 wt.% surface active agent, 0-30 wt.% electrolyte salt and 10-30 wt.% de-ionized water. USE - Aqueous sodium ion battery plastic electrode. ADVANTAGE - The electrode is a stable mixture of active substance and electrolyte. The electrolyte is locked in the plastic electrode. The ion diffusion path is reduced when the battery is charged and discharged. The ion impedance and the electronic impedance are greatly reduced. The electrode is good for large-rate output. The preparation of the electrode and the assembly of the battery are finished synchronously. The injection process is omitted, and the preparation process of the battery is simplified. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a method for preparing aqueous sodium ion battery plastic electrode, which involves mixing uniformly electrolyte salt and 10-30 wt.% deionized water to obtain a electrolyte solution, adding the 0-3 wt.% surfactant and 0-10 wt.% humectant into the 0-30 wt.% electrolyte solution, mixing into uniform solvent matrix, adding the conductive material into the solvent matrix by high speed stirring, dispersing uniformly 3-10 wt.% conductive material in the solvent matrix, preparing anode electrode, adding the 40-50 wt.% anode active material and binder, preparing cathode electrode, adding 40-50 wt.% cathode active material and 0-10 wt.% binder by high speed stirring, mixing uniformly, adding 0-5 wt.% crosslinking agent, stirring, mixing at low speed, making crosslinking with the adhesive to obtain a three-dimensional net-shaped structure of aqueous sodium ion battery plastic electrode paste; (2) a method for preparing an aqueous sodium ion battery using the plastic electrode, which involves placing the lower splint, placing the lower current collector on the lower splint, placing conductive plate on the lower current collector, adding an appropriate amount of negative plastic electrode paste on the conductive plate, placing separator on the negative plastic electrode paste, pre-pressing, reshaping negative plastic electrode paste, adding an appropriate amount of positive plastic electrode paste on the diaphragm, repeating placing a separator on the negative plastic electrode paste, pre-pressing, reshaping the negative plastic electrode paste and adding an appropriate amount of positive plastic electrode paste on the diaphragm multiple times until the number of electrode layers required for the battery design capacity is completed, where each time the conductive plate is placed, pre-pressing, reshaping the positive plastic electrode paste, and placing on the conductive plate, the upper current collector and the upper splint in turn to making plastic electrode water-based sodium ion battery; and (3) a aqueous sodium ion battery, which comprises lower clamping plate, a lower current collector, a conductive plate, a cathode plastic electrode, a diaphragm, a positive plastic electrode, an upper conductive plate, an upper current collector and an upper clamping plate, between the lower clamping plate and the upper conductive plate is provided with multiple groups of conductive plates, a cathode plastic electrode, a diaphragm, a battery unit composed of a positive plastic electrode, two sides of the conductive plate and the diaphragm are provided with an upward convex edge, the height of the convex edge of the conductive plate is corresponding to the thickness of the negative plastic electrode, the height of the convex edge of the diaphragm is corresponding to the thickness of the positive plastic electrode, the lower clamping plate, and the lower current collector, the upper conductive plate, the upper current collector and the upper clamping plate are plate-shaped pieces.