▎ 摘　　要

NOVELTY - Preparing graphene/silver nanowire composite aerogel involves adding 1.0-5.0g sodium metal and 10-50 mL organic solvent in a glass container, heating to make the temperature reach 50-150 degrees C, and the metallic sodium becomes bright yellow sodium spheres, mixing 10 mL graphene oxide solution with a concentration of 0.5-20 mg/mL and 10 mL silver nanowire dispersion with a concentration of 0.1-1 mg/mL under ultrasound to obtain a mixed dispersion of graphene oxide-silver nanowires, adding 0.1-1 g template particles with a particle size of 20-100 nanometer to the graphene oxide-silver nanowire mixed dispersion obtained, and form a colloid of graphene oxide, silver nanowires and template particles after stirring Mixed solution. USE - Method for preparing graphene/silver nanowire composite aerogel. ADVANTAGE - The method enables to prepare graphene/silver nanowire composite aerogel, in simple manner. DETAILED DESCRIPTION - Preparing graphene/silver nanowire composite aerogel involves adding 1.0-5.0g sodium metal and 10-50 mL organic solvent in a glass container, heating to make the temperature reach 50-150 degrees C, and the metallic sodium becomes bright yellow sodium spheres, mixing 10 mL graphene oxide solution with a concentration of 0.5-20 mg/mL and 10 mL silver nanowire dispersion with a concentration of 0.1-1 mg/mL under ultrasound to obtain a mixed dispersion of graphene oxide-silver nanowires, adding 0.1-1 g template particles with a particle size of 20-100 nanometer to the graphene oxide-silver nanowire mixed dispersion obtained, and form a colloid of graphene oxide, silver nanowires and template particles after stirring Mixed solution, adding 0.1-1.0g cross-linking agent to the colloidal mixture obtained, mixing uniformly and droppin into the system formed due to the difference in density, the water phase of graphene oxide and silver nanowires and template particles accumulate at the bottom of the container, the organic solvent in the oil phase is at the uppermost layer, the sodium spheres are at the interface between the oil phase and the water phase, and a micro-explosion reaction occurs with graphene oxide and water, and the hydrogen bubbles generated in situ. The sodium spheres are pushed to the oil phase, and the surface of the sodium spheres are continuously updated. Then the sodium spheres are fall to the two-phase interface by gravity so that the reaction can proceed continuously, so that the graphene oxide is reduced to graphene. The reaction between the oil-water two-phase interface releases a lot of heat, which promotes the chemical bridging reaction between graphene oxide and the cross-linking agent, and forms a molecular bridge to induce the graphene and the cross-linking agent to form an aerogel macroscopic body with a spatial network structure, and support its strength, the template particles are wrapped in the pores of the aerogel to achieve the effect of controlling the pore size of the aerogel. The silver nanowires are distributed on the surface of graphene as the elastic support and conductive enhancement unit of the aerogel, waited for the temperature of the system to drop to room temperature, washed with ethanol and water alternately for three times to remove residual substances and by-products to obtain graphene/silver nanowires bridged by the cross-linking agent template particle composite product. The graphene/silver nanowire/template particle composite product obtained is first pre-frozen in a refrigerator, and then supercritically dried or freeze-dried to remove template particles, and finally graphene/silver nanowires are obtained composite aerogel.