▎ 摘　　要

NOVELTY - Preparing anode active material of sodium ion battery hybridized with nitrogen and sulfur dual atoms, comprises vulcanizing sulfur source in advance and grafting the polymer (I) at temperature of 250-400 degrees C, then performing pyrolysis treatment at 550-800 degrees C to obtain anode active material of the sodium ion battery. The sulfur source is at least one of elemental sulfur and polymer sulfur. USE - The anode active material of sodium ion battery hybridized with nitrogen and sulfur dual atom is useful as anode active material for sodium ion batteries (claimed). ADVANTAGE - The anode active material of sodium ion battery hybridized with nitrogen and sulfur dual atom has excellent electrical performance in the sodium. DETAILED DESCRIPTION - Preparing anode active material of sodium ion battery hybridized with nitrogen and sulfur dual atoms, comprises vulcanizing sulfur source in advance and grafting the polymer of formula (I) at temperature of 250-400 degrees C, then performing pyrolysis treatment at 550-800 degrees C to obtain anode active material of the sodium ion battery. The sulfur source is at least one of elemental sulfur and polymer sulfur. R = H, 1-3C alkyl group or 1-3C alkoxy group. INDEPENDENT CLAIMS are also included for: (1) anode active material for sodium ion battery hybridized with N and S dual-atom obtained by above method, where nitrogen content is 4-6 wt.% (preferably 4.8-5.2 wt.%), sulfur content is 7-16 wt.% (preferably 10-15.5 wt.%); (2) sodium ion battery anode material, comprising anode active material for sodium ion battery hybridized with N and S dual-atom, conductive agents and adhesives, where conductive agent is at least one of flake graphite, Super P, acetylene black, Ketjen black, VGCF, and carbon nanotubes, binder is at least one of PVDF, PTEF, La132, La133, CMC and SBR, mass ratio of the anode active material of the sodium ion battery, the conductive agent and the binder is 80-96:10-2:10-2; (3) sodium ion battery anode sheet, comprising current collector and the sodium ion battery anode material compounded on the surface of the current collector; and (4) sodium ion battery, comprising loaded with the anode sheet.