▎ 摘　　要

NOVELTY - A sodium ion capacitor comprises sodium ion disulfide/graphene composite material, and porous carbon material, where the sodium ion disulfide/graphene composite material is used as a negative electrode and the porous carbon material is used as a positive electrode. USE - Sodium ion capacitor, comprises sodium ion disulfide/graphene composite material. ADVANTAGE - The sodium ion capacitor has high energy density and high power density, adjusting the rate performance and has broad practical application prospects, and in rapid manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a sodium ion capacitor.