▎ 摘　　要

NOVELTY - The method for preparing three-dimensional tent-type graphene-metal oxide nanocomposite, involves stirring aqueous ammonia and graphene oxide solution, mixing evenly, heat-preserving until formation of graphene gel, washing the resulting graphene gel with supercritical carbon dioxide, drying, finally calcining to obtain three-dimensional nanoporous graphene, immersing the prepared three-dimensional nanoporous graphene in sol-gel containing initiator and metal ion, drying with supercritical carbon dioxide and calcining to obtain final product. USE - Method for preparing three-dimensional tent-type graphene-metal oxide nanocomposite (claimed). ADVANTAGE - The method enables simple and economical preparation of three-dimensional tent-type graphene-metal oxide nanocomposite with excellent morphology, excellent electrochemical properties and average pore size of less than 10 nm, and avoids collapsing and accumulating three-dimensional graphene when recombined with the metal oxide. DETAILED DESCRIPTION - Method for preparing three-dimensional tent-type graphene-metal oxide nanocomposite, involves (a) stirring aqueous ammonia and graphene oxide solution, mixing evenly, placing in a closed reactor, heat-preserving at 80-90 degrees C until formation of graphene gel, washing the resulting graphene gel with supercritical carbon dioxide, drying, finally calcining to obtain three-dimensional nanoporous graphene, (b) immersing the prepared three-dimensional nanoporous graphene in sol-gel containing initiator and metal ion, drying the resulting product with supercritical carbon dioxide and calcining to obtain final product.