Preparation and surface characterization of Pt-Au/C cathode catalysts with ceria modification for oxygen reduction reaction

Chen Wei Liu; Yu Chen Wei; Kuan Wen Wang

doi:10.1016/j.elecom.2009.05.009

Preparation and surface characterization of Pt-Au/C cathode catalysts with ceria modification for oxygen reduction reaction

Chen Wei Liu, Yu Chen Wei, Kuan Wen Wang

Graduate Institute of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Alloy catalysts of Pt₅₀Au₅₀/Ce_xC with various Ce additions (x) were prepared for the oxygen reduction reaction (ORR). The characterization of the alloy structures, surface species, and electro-catalytic activities of prepared alloy catalysts were performed by XRD, temperature-programmed reduction (TPR), and rotating disc electrode (RDE) technique, respectively. The ORR activity of Pt₅₀Au₅₀/C alloy catalyst with a promotion of 15% CeO₂ was enhanced significantly in comparison to the commercial Pt/C catalyst within the mixed kinetic-diffusion control region. The addition of CeO₂ decreased the particle sizes, increased the dispersion and enhanced the surface segregation of Pt which resulting in an alloy surface with a moderate oxophilicity on alloy catalysts.

Original language	English
Pages (from-to)	1362-1364
Number of pages	3
Journal	Electrochemistry Communications
Volume	11
Issue number	7
DOIs	https://doi.org/10.1016/j.elecom.2009.05.009
State	Published - Jul 2009

Keywords

CeO
Oxophilicity
Oxygen reduction reaction (ORR)
Pt-Au catalysts
Temperature-programmed reduction (TPR)

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10.1016/j.elecom.2009.05.009

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title = "Preparation and surface characterization of Pt-Au/C cathode catalysts with ceria modification for oxygen reduction reaction",

abstract = "Alloy catalysts of Pt50Au50/CexC with various Ce additions (x) were prepared for the oxygen reduction reaction (ORR). The characterization of the alloy structures, surface species, and electro-catalytic activities of prepared alloy catalysts were performed by XRD, temperature-programmed reduction (TPR), and rotating disc electrode (RDE) technique, respectively. The ORR activity of Pt50Au50/C alloy catalyst with a promotion of 15% CeO2 was enhanced significantly in comparison to the commercial Pt/C catalyst within the mixed kinetic-diffusion control region. The addition of CeO2 decreased the particle sizes, increased the dispersion and enhanced the surface segregation of Pt which resulting in an alloy surface with a moderate oxophilicity on alloy catalysts.",

keywords = "CeO, Oxophilicity, Oxygen reduction reaction (ORR), Pt-Au catalysts, Temperature-programmed reduction (TPR)",

author = "Liu, {Chen Wei} and Wei, {Yu Chen} and Wang, {Kuan Wen}",

note = "Funding Information: This work was supported by the National Science Council of Taiwan under Contract No. NSC-97-2221-E-008-042.",

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T1 - Preparation and surface characterization of Pt-Au/C cathode catalysts with ceria modification for oxygen reduction reaction

AU - Liu, Chen Wei

AU - Wei, Yu Chen

AU - Wang, Kuan Wen

N1 - Funding Information: This work was supported by the National Science Council of Taiwan under Contract No. NSC-97-2221-E-008-042.

PY - 2009/7

Y1 - 2009/7

N2 - Alloy catalysts of Pt50Au50/CexC with various Ce additions (x) were prepared for the oxygen reduction reaction (ORR). The characterization of the alloy structures, surface species, and electro-catalytic activities of prepared alloy catalysts were performed by XRD, temperature-programmed reduction (TPR), and rotating disc electrode (RDE) technique, respectively. The ORR activity of Pt50Au50/C alloy catalyst with a promotion of 15% CeO2 was enhanced significantly in comparison to the commercial Pt/C catalyst within the mixed kinetic-diffusion control region. The addition of CeO2 decreased the particle sizes, increased the dispersion and enhanced the surface segregation of Pt which resulting in an alloy surface with a moderate oxophilicity on alloy catalysts.

AB - Alloy catalysts of Pt50Au50/CexC with various Ce additions (x) were prepared for the oxygen reduction reaction (ORR). The characterization of the alloy structures, surface species, and electro-catalytic activities of prepared alloy catalysts were performed by XRD, temperature-programmed reduction (TPR), and rotating disc electrode (RDE) technique, respectively. The ORR activity of Pt50Au50/C alloy catalyst with a promotion of 15% CeO2 was enhanced significantly in comparison to the commercial Pt/C catalyst within the mixed kinetic-diffusion control region. The addition of CeO2 decreased the particle sizes, increased the dispersion and enhanced the surface segregation of Pt which resulting in an alloy surface with a moderate oxophilicity on alloy catalysts.

KW - CeO

KW - Oxophilicity

KW - Oxygen reduction reaction (ORR)

KW - Pt-Au catalysts

KW - Temperature-programmed reduction (TPR)

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SN - 1388-2481

VL - 11

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EP - 1364

JO - Electrochemistry Communications

JF - Electrochemistry Communications

IS - 7

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Preparation and surface characterization of Pt-Au/C cathode catalysts with ceria modification for oxygen reduction reaction

Abstract

Keywords

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