▎ 摘　　要

NOVELTY - Cathode material comprises positive electrode material is selenium-carbon coated ferroferric oxide-graphene composite material. USE - Cathode material for sodium-selenium battery. ADVANTAGE - The cathode material has excellent electrochemical stability and ideal discharge specific capacity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing cathode material for sodium-selenium battery, which involves preparing carbon-coated ferroferric oxide composite graphene, compounding with elemental selenium to obtain selenium-carbon coated ferroferric oxide-graphene composite material.