The Pt/FeSnO（OH）_5 catalyst has been prepared by depositing Pt nanoparticles on the synthesized FeSnO（OH）_5 nanoboxes and demonstrates excellent performance towards methanol oxidation reaction（MOR） in direct met...The Pt/FeSnO（OH）_5 catalyst has been prepared by depositing Pt nanoparticles on the synthesized FeSnO（OH）_5 nanoboxes and demonstrates excellent performance towards methanol oxidation reaction（MOR） in direct methanol fuel cells（DMFCs）.The Pt/FeSnO（OH）_5 catalyst exhibits a higher mass activity（1182.35 mA/mgPt） compared with Pt/C（594.57 mA/mgPt） catalysts.The X-ray powder diffraction,field emission scanning electron microscope,field emission transmission electron microscopy,X-ray photoelectron spectroscopy and electrochemical experiments have been employed to explore the relationships between the crystal structure and electrochemical properties.The increased activity and resistance of CO poisoning for Pt/FeSnO（OH）_5 catalyst can be attributed to the strong interaction between the transition metal in the hydroxide and Pt and the bifunctional effect.The higher relative concentration of Pt^0 in Pt/FeSnO（OH）_5 also contributes to the MOR activity.Moreover,the charge transfer resistance of Pt/FeSnO（OH）_5 is lower than that of Pt/C.Therefore,Pt/FeSnO（OH）_5 has great application prospect as a high-performance electrocatalyst in DMFCs.展开更多
基金supported by the State Key Laboratory of Photocatalysis on Energy and Environment Open Project(SKLPEE-KF201606)Fuzhou University Testing Fund of precious apparatus(2017T007)
文摘The Pt/FeSnO（OH）_5 catalyst has been prepared by depositing Pt nanoparticles on the synthesized FeSnO（OH）_5 nanoboxes and demonstrates excellent performance towards methanol oxidation reaction（MOR） in direct methanol fuel cells（DMFCs）.The Pt/FeSnO（OH）_5 catalyst exhibits a higher mass activity（1182.35 mA/mgPt） compared with Pt/C（594.57 mA/mgPt） catalysts.The X-ray powder diffraction,field emission scanning electron microscope,field emission transmission electron microscopy,X-ray photoelectron spectroscopy and electrochemical experiments have been employed to explore the relationships between the crystal structure and electrochemical properties.The increased activity and resistance of CO poisoning for Pt/FeSnO（OH）_5 catalyst can be attributed to the strong interaction between the transition metal in the hydroxide and Pt and the bifunctional effect.The higher relative concentration of Pt^0 in Pt/FeSnO（OH）_5 also contributes to the MOR activity.Moreover,the charge transfer resistance of Pt/FeSnO（OH）_5 is lower than that of Pt/C.Therefore,Pt/FeSnO（OH）_5 has great application prospect as a high-performance electrocatalyst in DMFCs.
