▎ 摘　　要

NOVELTY - Preparing tin-based cathode material for lithium-ion based battery with double confinement effect, comprises (a) taking sodium sulfate, ammonium sulfate or mixture of sodium sulfate and ammonium sulfate, adding distilled water, stirring, (b) dissolving thiourea or cysteine or glycine into solution, stirring, (c) forming two electrode system by platinum electrode and graphite foil, performing electrochemical stripping to prepare sulfur-nitrogen co-doped graphene, (d) filtering the sulfur-nitrogen co-doped graphene, washing with ethanol, (e) adding TritonX-100 (Nonionic surfactant) in the prepared sulfur-nitrogen co-doped graphene solution, performing chemical tinning reaction in the tin plating solution, (f) filtering, drying, (g) dissolving obtained tin/sulfur nitrogen co-doped material graphene in distilled water, dissolving glucose or citric acid or sucrose and/or dopamine in the solution, evaporating distilled water, and (h) calcining dried solid, and cooling to room temperature. USE - The method is useful for preparing tin-based cathode material for lithium-based ion battery with double confinement effect. ADVANTAGE - The method stabilizes the structure of tin, prevents the agglomeration of tin during heat treatment and cycling, improves the electrochemical performance of tin-based composites, has high-performance tin-based anode materials, and promotes the development of new cathode materials for lithium-ion batteries. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for tin-based cathode material for lithium-ion based battery with double confinement effect, which is prepared by above method.