Oxygen reduction reaction on Pt-Pd catalysts supported on carbon xerogels: Effect of the synthesis method

Carbon-supported platinum and Pt–Pd alloy electrocatalysts with different Pt/Pd atomic ratios were synthesized by a microemulsion method at room temperature (metal loading is 10 wt %). The Pt–Pd/C bimetallic catalysts showed a single-phase fcc structure and the mean particle size of Pt–Pd/C catalysts was found to be lower than that of Pt/C. The methanol-tolerant studies of the catalysts were carried out by activity evaluation of oxygen reduction reaction (ORR) on Pt–Pd catalysts using a rotating disk electrode (RDE). The studies indicated that the order of methanol tolerance was found to be PtPd3/C>PtPd/C>Pt3Pd/C. The oxygen reduction activities of all Pt–Pd/C were considerably larger than that of Pt/C with respect to onset and overpotential values. The Pd-loaded catalysts shift the onset potential of ORR by 125 mVMSE, 53 mVMSE, and 41 mVMSE to less cathodic potentials for Pt3Pd/C, PtPd/C, and PtPd3/C, respectively, with reference to Pt/C and the Pt3Pd/C catalyst showed greater shift in the onset value than the other PtPd catalysts reported in literature. Moreover, the Pt–Pd/C catalysts exhibited much higher methanol tolerance during ORR than the Pt/C, assessing that these catalysts may function as a methanol-tolerant cathode catalysts in a direct methanol fuel cell.

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Tailoring Synthesis Conditions of Carbon Xerogels towards Their Utilization as Pt-Catalyst Supports for Oxygen Reduction Reaction (ORR)

Catalysts ◽

10.3390/catal2040466 ◽

2012 ◽

Vol 2 (4) ◽

pp. 466-489 ◽

Cited By ~ 22

Author(s):

Cinthia Alegre ◽

David Sebastián ◽

Estela Baquedano ◽

María Elena Gálvez ◽

Rafael Moliner ◽

...

Keyword(s):

Oxygen Reduction Reaction ◽

Oxygen Reduction ◽

Reduction Reaction ◽

Pt Catalyst ◽

Catalyst Supports ◽

Synthesis Conditions ◽

Carbon Xerogels

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Enhanced oxygen reduction reaction performance over Pd catalysts by oxygen-surface-modified SiC

Chinese Journal of Catalysis ◽

10.1016/s1872-2067(20)63716-0 ◽

2021 ◽

Vol 42 (6) ◽

pp. 963-970

Author(s):

Jing Li ◽

Xiang Sun ◽

Yongzheng Duan ◽

Dongmei Jia ◽

Yuejin Li ◽

...

Keyword(s):

Oxygen Reduction Reaction ◽

Oxygen Reduction ◽

Reduction Reaction ◽

Pd Catalysts ◽

Reaction Performance ◽

Surface Modified ◽

Oxygen Surface

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Investigation of oxygen reduction reaction and methanol tolerance on the carbon supported Pt-Pd catalysts

Russian Journal of Electrochemistry ◽

10.1134/s1023193515040126 ◽

2015 ◽

Vol 51 (4) ◽

pp. 345-352 ◽

Cited By ~ 5

Author(s):

Yongfu Tang ◽

Faming Gao ◽

Shichun Mu ◽

Shengxue Yu ◽

Yufeng Zhao

Keyword(s):

Oxygen Reduction Reaction ◽

Oxygen Reduction ◽

Reduction Reaction ◽

Methanol Tolerance ◽

Pd Catalysts

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A novel cobalt tetranitrophthalocyanine/graphene composite assembled by an in situ solvothermal synthesis method as a highly efficient electrocatalyst for the oxygen reduction reaction in alkaline medium

Physical Chemistry Chemical Physics ◽

10.1039/c3cp51577j ◽

2013 ◽

Vol 15 (31) ◽

pp. 13093 ◽

Cited By ~ 34

Author(s):

Guojun Lv ◽

Lili Cui ◽

Yanying Wu ◽

Ying Liu ◽

Tao Pu ◽

...

Keyword(s):

Oxygen Reduction Reaction ◽

Oxygen Reduction ◽

Alkaline Medium ◽

Solvothermal Synthesis ◽

Synthesis Method ◽

Reduction Reaction ◽

Graphene Composite ◽

Highly Efficient

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Binary and Ternary 3D Nanobundles Metal Oxides Functionalized Carbon Xerogels as Electrocatalysts toward Oxygen Reduction Reaction

Materials ◽

10.3390/ma13163531 ◽

2020 ◽

Vol 13 (16) ◽

pp. 3531 ◽

Cited By ~ 2

Author(s):

Abdalla Abdelwahab ◽

Francisco Carrasco-Marín ◽

Agustín F. Pérez-Cadenas

Keyword(s):

Oxygen Reduction Reaction ◽

Metal Oxides ◽

Oxygen Reduction ◽

Reduction Reaction ◽

Basic Medium ◽

Equivalent Series Resistance ◽

Mesopore Volume ◽

Carbon Xerogel ◽

Carbon Xerogels ◽

High Electronic Conductivity

A series of carbon xerogels doped with cobalt, nickel, and iron have been prepared through the sol–gel method. The doped carbon xerogels were further functionalized with binary and ternary transition metal oxides containing Co, Ni, and Zn oxides by the hydrothermal method. A development in the mesopore volume is achieved for functionalized carbon xerogel doped with iron. However, in the functionalization of carbon xerogel with ternary metal oxides, a reduction in pore diameter and mesopore volume is found. In addition, all functionalized metal oxides/carbon are in the form of 3D nanobundles with different lengths and widths. The prepared samples have been tested as electrocatalysts for oxygen reduction reaction (ORR) in basic medium. All composites showed excellent oxygen reduction reaction activity; the low equivalent series resistance of the Zn–Ni–Co/Co–CX composite was especially remarkable, indicating high electronic conductivity. It has been established that the role of Zn in this type of metal oxides nanobundles-based ORR catalyst is not only positive, but its effect could be enhanced by the presence of Ni.

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