-FeOOH- -FeOOH- Method of preparing iron oxide-graphene composites and the iron oxide-FeOOH-graphene composites prepared by the same method

摘要

The present invention relates to a process for producing a graphene oxide dispersion solution by separating graphite oxide in a solvent (step 1); And a step (step 2) of conducting a hydrothermal reaction at a temperature of 50 to 120 ° C by adding an iron precursor to the dispersion solution prepared in the step 1, and a process for producing an iron oxide (β-FeOOH) -graffin complex do. The process for preparing an iron oxide (β-FeOOH) -graffin complex according to the present invention comprises hydrothermally reacting at a low temperature to prepare an iron oxide (β-FeOOH) -graphine complex to use a functional group containing oxygen bound to the surface of graphene oxide Iron oxide (β-FeOOH) nanoparticles can be effectively dispersed on graphene oxide, and thereby a large amount of iron oxide (β-FeOOH) -graaffin complex can be obtained. Further, the iron oxide (β-FeOOH) -graffin complex produced by the production method of the present invention can be applied as a catalyst for oxygen reduction reaction for fuel cells.