▎ 摘　　要

NOVELTY - Preparing tin-antimony oxide composite material, comprises firstly preparing solution of carbon source, then adding tin-antimony oxide to fully dissolve to obtain precursor solution, then freezing the precursor solution, vacuum drying, performing carbonization treatment, or electrostatic spinning after carbonization treatment to obtain tin-antimony oxide composite material with porous carbon coating structure USE - The tin-antimony oxide composite material is useful in preparing battery negative electrode material (claimed). ADVANTAGE - The tin-antimony oxide composite material has good specific capacity and cycle stability as sodium ion battery negative electrode the specific capacity can reach 575 mAh/g, the capacity maintenance rate of the front 40 ring reaches 99 %. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: use of tin-antimony oxide composite material in preparing battery negative electrode material, where the battery is secondary battery or sodium ion battery, the negative electrode material comprises 50.99.5 wt.% tin-antimony oxide composite material, 0.1-40 wt.% conductive agent and 0.1-40 wt.% agglomerant-antimony oxide composite material; and econdary battery.