▎ 摘　　要

NOVELTY - Reduced graphene oxide-selenium nanowire hydrogel composite material, comprises reduced graphene oxide and selenium nanowires, the reduced graphene oxide is a layered reduced graphene oxide. USE - The reduced graphene oxide-selenium nanowire hydrogel composite material can be directly used as a self-supporting positive electrode material of a lithium ion battery, the material is used as a lithium selenium battery cathode material to prepare a lithium selenium battery (claimed). ADVANTAGE - The reduced graphene oxide-selenium nanowire hydrogel composite material has high electrical conductivity, small volume expansion, and large specific surface area, and exhibits good cycle performance and capacity retention and preparation method of the hydrogel composite material has simple operation and low preparation cost, and is suitable for industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for method for preparing the reduced graphene oxide-selenium nanowire hydrogel composite material, which involves: (A) adding the selenium source to the surfactant-containing solution and stir to obtain a uniform mixed solution; (B) adding the mixed solution obtained to the solution containing a reducing agent, stirring, and reducing reaction occurs, and then centrifuging, washing, dispersing and drying to obtain red-brown selenium nanowire powder; (C) adding obtained red-brown selenium nanowire powder to an ethanol solution, and adding then graphene oxide and dispersing by ultrasound to obtain a uniform suspension; (D) placing the suspension obtained in a high-temperature reaction kettle, sealing, heating, reducing reaction, cooling, and obtaining a reaction product; and (E) soaking reaction product obtained with deionized water, washing, and then freeze-drying.