Abstract: The present disclosure provides an anode and a preparing method therefor, and a lithium ion battery. The method for preparing an anode includes: coating anode slurry on a surface of a current collector to obtain a current collector including an anode slurry layer, where the anode slurry includes a conductive agent, an anode active material, an adhesive and a solvent; and performing point discharge on the current collector including the anode slurry layer, to cause the anode active material and the conductive agent to arrange in direction of an electric field, and then drying to obtain the anode. By means of the above method, the conductivity, energy density and rate capability of a battery can be enhanced without increasing the cost of raw materials and formulations.

Abstract: The present disclosure provides a sodium ion cathode electrode material, a preparation method thereof, and a sodium ion battery. The sodium ion cathode electrode material includes a manganese-based cathode electrode material and a coating layer coated on the manganese-based cathode electrode material. A general chemical formula of the manganese-based cathode electrode material is NaxMnyM1-yO2, herein M is selected from any one of Cu, Fe, Co, and Ni, and 0.5?x?1, 0.5?y?1, the coating layer is a lithium-containing ternary material, and a general chemical formula of the lithium-containing ternary material is LiNiaCobMncO2, 0<a<1, 0<b<1, 0<c<1, and a+b+c=1. In the present application, a lithium source containing the lithium ternary material is used as a sacrificial agent to generate a part of SEI, thereby the loss of an active sodium source in the manganese-based cathode electrode material is reduced, and the electrical properties of the sodium ion cathode electrode material are improved.

Abstract: A doped phosphorus-sulfur iodide solid electrolyte, a preparation method therefor, and use thereof. The chemical formula of said solid electrolyte is Li6-xMxP1-xS5I, in which 0<x<0.8, and M is tungsten and/or molybdenum. Said method comprises: 1) mixing a lithium source, a phosphorus source, an iodine source, a sulfur source, and an M source in an inert atmosphere, and then ball-milling same to obtain a solid electrolyte precursor; and 2) sintering the solid electrolyte precursor obtained in step 1) in an inert atmosphere or in vacuum to obtain the doped phosphorus-sulfur iodide solid electrolyte.