▎ 摘　　要

NOVELTY - Composite electrode material of sodium titanate nano-fiber/reduction-oxidation graphene comprises a two-dimensional sheet layer structure, where the particle diameter of the particle is 1-6 microns, the thickness is 10-20 nm, and it is composed of a few layers of reducing and oxidizing graphene, and the sodium titanate nano-fiber with a diameter of 5-10 nm. USE - Composite electrode material of sodium titanate nano-fiber/reduction-oxidation graphene, for preparing sodium ion batteries or sodium batteries. ADVANTAGE - The material has a simple technique, easy amplification production, and strong controllability, as sodium-ion battery negative electrode or sodium battery positive electrode at the same time with high first-week coulomb efficiency, low working voltage, high capacity, excellent multiplying characteristics, and circulating stability, exhibiting a wide market application prospect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a method for preparing composite electrode material of sodium titanate nano-fiber/reduction-oxidation graphene, which involves the synthesis of precursors by using a solvent method: adding a few layers of reduced graphene to the organic solvent with a strong alkali, stirring, and adding titanium source, drying the solvent to obtain the mixture graphene the load titanium dioxide, collecting the precipitate and drying, calcining to obtain rGO/titanium dioxide composite precursor, using hydrothermal treatment method for preparing sodium titanate nano-fiber/reduction-oxidation graphene composite electrode material, the precursor is added to the sodium hydroxide alkali solution, then hydro-thermal treatment, washing and drying to obtain the sodium titanate nano-fiber/reduction-oxidation graphene the composite electrode material; and 2. an application of the composite electrode material of sodium titanate nano-fiber/reduction-oxidation graphene, which comprises for preparing sodium ion batteries or sodium batteries.