The present disclosure provides a positive electrode active material, a sodium-ion battery and a preparation method therefor and an electrical device, relating to the technical field of secondary batteries. The positive electrode active material includes a...

The method described allows the selection and/or design of anode and cathode materials by n- or p-doping semiconductor material. Such doped materials are suitable for use in electrodes of lithium ion batteries. As one advantage, the anode and the cathode m...

An electrode sheet material for use in secondary batteries is provided. According to the present invention, battery properties can be improved and its economy is excellent. Punching is carried out on steel or copper sheet (foil), and after nickel plating, ...

A nonaqueous secondary battery having a compound of any of the general formulae (1) to (3) AaS BbD(1-b)Sy EeGgJ(1-e-g)MmSz where A is Cu, Ag or Au; 0.4 ≤ a ≤ 5; B and D are different from each other, and are each selected from the group consisting of C...