▎ 摘　　要

NOVELTY - Sodium borohydride aqueous solution is added to mixture containing silver nitrate and poly(diallyldimethylamonium chloride), stirred, filtered and reacted to obtain nano silver sol-gel. The oxidized graphene aqueous solution and nano silver sol-gel are ultrasonically treated to obtain graphene oxide/silver. A quartz substrate is pre-treated in hydrogen peroxide/sulfuric acid mixed solution, and dried. Resultant preprocessed quartz substrate is added to graphene oxide/silver sol-gel precursor, and heat-treated to obtain graphene/silver composite conductive film. USE - Manufacture of graphene/silver composite conductive film. ADVANTAGE - The method efficiently provides graphene/silver composite conductive film, by simple method. DETAILED DESCRIPTION - Graphene oxide is prepared as 0.1 mg/ml of suspension, and ultrasonically processed. Silver nitrate and poly(diallyldimethylamonium chloride) (PDDA) are dissolved in deionized water, stirred and mixed uniformly. The ratio of silver nitrate and PDDA in the mixed solution is 1:4-12. The ratio of silver nitrate and sodium borohydride is 1:3-6. Sodium borohydride aqueous solution having concentration of 3.6 mmol/ml, is added to the resultant mixture, stirring uniformly, filtered, and reacted at room temperature for 30-60 minutes to obtain nano silver sol-gel. The oxidized graphene aqueous solution and nano silver sol-gel are ultrasonically treated at room temperature for 20-60 minutes to obtain graphene oxide/silver. A quartz substrate is pre-treated in hydrogen peroxide/sulfuric acid mixed solution at 30-100 degrees C, and dried under nitrogen atmosphere. The resultant preprocessed quartz substrate is added to graphene oxide/silver sol-gel precursor, processed under argon atmosphere in vacuum furnace, and heat-treated at 300-800 degrees C under hydrogen/argon atmosphere to obtain graphene/silver composite conductive film.