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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/mg(Pt)) compared with Pt/C (594.57 mA/mg(Pt)) 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.
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CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
ISSN: 0254-5861
CN: 35-1112/TQ
Year: 2018
Issue: 10
Volume: 37
Page: 1585-1595
0 . 6 9 5
JCR@2018
5 . 9 0 0
JCR@2023
ESI Discipline: CHEMISTRY;
ESI HC Threshold:209
JCR Journal Grade:4
CAS Journal Grade:4
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