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AgNi@ZnO nanorods grown on graphene as an anodic catalyst for direct glucose fuel cells
Thoa Thi Kim Huynh,Thao Quynh Ngan Tran,윤현희,김우재,김일태 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.7
Nano carbon-semiconductor hybrid materials such as graphene and zinc oxide (ZnO) have been vigorously explored for their direct electron transfer properties and high specific surface areas. We fabricated a three-dimensional anodic electrode catalyst nanostructure for a direct glucose fuel cell (DGFC) utilizing two-dimensional monolayer graphene and one-dimensional ZnO nanorods, which accommodate silver/nickel (Ag/Ni) nanoparticle catalyst. Glucose, as an unlimited and safe natural energy resource, has become the most popular fuel for energy storage. Ag and Ni nanoparticles, having superior catalytic activities and anti-poisoning effect, respectively, demonstrate a 73-times enhanced cell performance (550 W cm2 or 8mW mg1) when deposited on zinc oxide nanorods with a small amount of ~0.069 mg in 0.5M of glucose and 1M of KOH solution at 60 oC. This three-dimensional anodic electrode catalyst nanostructure presents promise to open up a new generation of fuel cells with non-Pt, low mass loading of catalyst, and 3D nanostructure electrodes for high electrochemical performances.