The development of advanced and efficient anode catalysts to accelerate the kinetic rate of methanol oxidation plays an important role in the large-scale commercial application of the direct methanol fuel cells(DMFCs)...The development of advanced and efficient anode catalysts to accelerate the kinetic rate of methanol oxidation plays an important role in the large-scale commercial application of the direct methanol fuel cells(DMFCs).Herein,we report the design and construction of small-sized rhodium nanocrystals decorated on 3D hybrid aerogels built from graphene and metal-organic framework(Rh/G-ZIF)via a solvothermal co-assembly method.Benefiting from the 3D rigid crosslinked architecture,abundant porous channels,and highly dispersed ultrafine Rh nanoparticles,the optimized Rh/G-ZIF aerogel exhibits a large electrochemically active surface area,high mass and specific activities,and excellent long-term durability toward the methanol electrooxidation,all of which are significantly superior to those of Rh catalysts supported by traditional carbon materials(such as carbon black,carbon nanotube,and graphene).展开更多
基金financially supported by the National Natural Science Foundation of China(No.51802077)the Fundamental Research Funds for the Central Universities(No.B220202042).
文摘The development of advanced and efficient anode catalysts to accelerate the kinetic rate of methanol oxidation plays an important role in the large-scale commercial application of the direct methanol fuel cells(DMFCs).Herein,we report the design and construction of small-sized rhodium nanocrystals decorated on 3D hybrid aerogels built from graphene and metal-organic framework(Rh/G-ZIF)via a solvothermal co-assembly method.Benefiting from the 3D rigid crosslinked architecture,abundant porous channels,and highly dispersed ultrafine Rh nanoparticles,the optimized Rh/G-ZIF aerogel exhibits a large electrochemically active surface area,high mass and specific activities,and excellent long-term durability toward the methanol electrooxidation,all of which are significantly superior to those of Rh catalysts supported by traditional carbon materials(such as carbon black,carbon nanotube,and graphene).
