▎ 摘　　要

NOVELTY - Composite material comprises iron (III) oxide-hydroxide (FeOOH) layer on lower surface are reduced graphene oxide (rGO). USE - The composite material is useful in the field of electrochemical applications, preferably preparing super-capacitor material, and cathode material of super-capacitor (claimed). ADVANTAGE - The material exhibits good electrochemical energy-storing property, has high specific capacity, and circulating the low decay rate, good circulation stability and has good practical application prospect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing rGO/FeOOH composite material comprising using electro-deposition on the foam nickel growth FeOOH, coating 1 through hydrothermal reduction to obtain the composite material with a sandwich structure.