Three-Dimensional Graphene Aerogel Supported on Efficient Anode Electrocatalyst for Methanol Electrooxidation in Acid Media

This work attempted to improve the catalytic performance of an anodic catalyst for use in direct methanol fuel cells by coating graphene aerogel (GA) with platinum nanoparticles. A hydrothermal, freeze-drying, and microwave reduction method were used load Pt–Ru bimetallic nanoparticles onto a aerogel. The mesoporous structure is expected enhance mass transfer electrode. XRD, Raman spectroscopy, SEM, TEM described as-synthesized PtRu/GA. Compared commercial PtRu/C same loading (20%), electrocatalytic PtRu/GA presents superior stability oxidation reaction. Furthermore, offers electrochemical surface area 38.49 m2g−1, maximal activity/specific activity towards 219.78 mAmg−1/0.287 mAcm−2, which higher than that PtRu/C, 73.11 mAmg−1/0.187 mAcm−2. Thus, enhanced proved GA has excellent potential Pt catalysts tolerance CO poisoning.