▎ 摘　　要

NOVELTY - Hollow metal oxide-metal phosphide heterojunction material is a hollow iron(II, III) oxide-iron phosphide heterojunction material, is claimed. The material is a hollow spherical structure composed of nanoparticles, and the diameter of the hollow sphere is 200-500 nm. USE - The hollow iron(II, III) oxide-iron phosphide heterojunction material is useful in lithium-sulfur battery (claimed). ADVANTAGE - The heterojunction material improves the catalytic conversion activity of polysulfide in lithium-sulfur battery, inhibiting poly sulfide shuttle effect to improve the electrochemical performance of the lithium sulfur battery, at the same time, and simplifies the preparation method and shortens the preparation period. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: hollow iron(II, III) oxide-iron phosphide modified diaphragm; hollow iron(II, III) oxide-iron phosphide modified diaphragm lithium-sulfur battery; preparing hollow metal oxide-metal phosphide heterojunction material; and preparation method of hollow iron(II, III) oxide-iron phosphide modified diaphragm.