▎ 摘　　要

NOVELTY - The electrode has electrochemical storage active substance comprising WS2 nano hole/graphene composite nano material and graphene nano-sheet material, where the electrode comprises 10 wt. % acetylene black, 5 wt. % carboxymethyl cellulose and 5 wt. % polyvinylidene fluoride. The quantity of a ratio of the composite nano material and graphene nano-sheet material is 1: 1-1: 3. USE - WS2 hole/graphene nano-electrochemical storage composite electrode for a sodium ion battery. ADVANTAGE - The electrode has high reversible storage capacity, better circulation property and excellent rate characteristics and wide application prospect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a WS2 hole/graphene nano-electrochemical storage composite electrode preparation method. DESCRIPTION OF DRAWING(S) - The drawing shows a photographic view illustrating a WS2 hole/graphene nano-electrochemical storage composite electrode preparation method.