Dual-ion battery lithium-free negative electrode material, preparation method and dual-ion battery

The invention provides a lithium-free negative electrode material of a dual-ion battery, a preparation method and the dual-ion battery. The preparation method of the lithium-free negative electrode material comprises the following steps: dissolving a silver salt, a conductive salt, a coordination agent and an additive in water to obtain an electroplating solution, adding a potassium hydroxide solution to adjust the pH value of the electroplating solution, placing a negative electrode current collector in the electroplating solution as a cathode, and carrying out electrodeposition by taking a Pt plate as an anode to obtain the lithium-free negative electrode material of the dual-ion battery, thereby producing the lithium-free negative electrode material. The preparation method is simple, raw materials are cheap, and conditions are controllable. The lithium-free negative electrode material for a dual-ion battery includes a lithium-free negative electrode active material including a silver material. The lithium-