Facile synthesis of supported Pt–Cu nanoparticles with surface enriched Pt as highly active cathode catalyst for proton exchange membrane fuel cells

Xu, Zhuang; Zhang, Huamin; Liu, Sisi; Zhang, Bingsen; Zhong, Hexiang; Su, Dang Sheng

doi:10.1016/j.ijhydene.2012.09.050

Cited by 51 publications

(31 citation statements)

References 25 publications

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“…6,33 These two doublets show a slightly negative shift, which is probably due to the geometry effect (lattice constrain) and electronic effect (binding energy modification) between Pt, Au and/or Cu atomic orbit and in turn to their alloy formation. 34,35 Meanwhile, two additional Pt 4f peaks at BE ca. 74.2 and 77.5 eV are corresponding to a higher oxidation state Pt (Ⅳ).…”

Section: Characterizations Of As-prepared Electrodesmentioning

confidence: 99%

Au–Cu–Pt ternary catalyst fabricated by electrodeposition and galvanic replacement with superior methanol electrooxidation activity

et al. 2014

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ARTICLE This journal isA series of Au-Cu-Pt ternary catalysts were fabricated on glassy carbon electrode (GCE) by a two-step method. Au-Cu nanoparticles were formed by initial electrodeposition of Au-Cu layers onto GCE and then followed by the partial replacement of Cu by Pt. The morphology and composition of Au-Cu-Pt catalysts were characterized by scanning electron microscope (SEM), energy dispersive X-ray analysis (EDX), EDX element mapping and X-ray photoelectron spectroscopy (XPS). It was found that the alloying micro-structures existed in the catalysts among Au, Cu and/or the partially replaced Pt. Moreover, electrochemical measurements revealed that although with rather low loading of Pt, Au-Cu-Pt/GCE-10 catalyst presented superior electrocatalytic activity and stability to that of the other comparative electrodes toward methanol electrooxidation (MEO). It indicated that this twostep method can efficiently decrease the amount of Pt loading in catalyst. These findings also suggested that the prepared Au-Cu-Pt catalyst has a great potential for use in direct methanol fuel cell (DMFC).

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Section: Characterizations Of As-prepared Electrodesmentioning

confidence: 99%

Au–Cu–Pt ternary catalyst fabricated by electrodeposition and galvanic replacement with superior methanol electrooxidation activity

et al. 2014

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“…Tian and coworkers have improved the intrinsic catalytic activity of the surface of Pt metal by preparing the Pt nanoparticles with high‐index crystal plane . Also, reducing the amount of Pt in the catalyst by doping the non‐noble metals into the Pt is another way to reduce the costs and enhance the catalytic performance of Pt‐based catalyst . For example, Schalow and Zhang have reduced the platinum content of the catalyst by using the multiple structures of Pt and other metal like core‐shell structure , .…”

Section: Introductionmentioning

confidence: 99%

Direct One‐pot Synthesis of Carbon Supported Ag‐Pt Alloy Nanoparticles as High Performance Electrocatalyst for Fuel Cell Application

Zhang

Huang

et al. 2019

Fuel Cells

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Ag‐Pt alloy material is one of the most potential candidates to improve the catalytic activity of Pt‐based catalyst toward the oxygen reduction reaction (ORR), which can reduce the dosage of the high‐cost metal Pt used in the cathode of fuel cells. But it is hard to synthesis Ag‐Pt alloy with nanosize in an easy and cheap way. In this study, the Ag‐Pt alloy nanoparticles supported on carbon (Ag‐Pt/C) with different Ag at.% were prepared by a facile one‐pot approach with low costs. The XRD, TEM and XPS measurements were applied to verify the alloy structure of Ag‐Pt nanoparticles. These Ag‐Pt/C samples showed enhanced mass activities and catalytic stabilities for the ORR, which was up to two times higher than that of the commercial Pt/C catalyst at 0.9 V (vs. reversible hydrogen electrode). Furthermore, the membrane electrode assembly (MEA) made from the Ag‐Pt/C catalyst also showed a higher power density in H2‐O2 fuel cell test compared to the MEA made from the commercial Pt catalyst. These enhancements are attributed to the higher utilization of Pt and the regulated oxygen adsorption energy of Pt in the surface, which was confirmed using the density function theory calculation.

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“…On the other hand, the new non-noble metal catalysts have shown a low mass activity in fuel cells [3,15,16]. As a result, developing alloy catalysts that have lower Pt contents are more appealing due to proven high activity of the Pt-alloy catalysts toward oxygen reduction [17][18][19][20][21][22][23][24]. In addition, it has been shown that the Pt-alloys can be effective to reduce the costs and increase the efficiency of DAFCs [7,9,11,25].…”

Section: Introductionmentioning

confidence: 99%

“…Recent studies have revealed that Pt-Cu are also very good candidate for ORR [12, 22-24, 27, 30, 33, 34]. Pt-Cu nanoparticles with Pt rich surface have shown that the presence of Cu modified the electronic properties of Pt atoms on the surface and enhanced the ORR activity [23]. Different Pt-M (M=Au, Pd, or Cu) nanorods have also been studied, with Pt-Cu nanorods displaying the highest ORR activity [24].…”

Section: Introductionmentioning

confidence: 99%

The Oxygen Reduction Activity of Pt-Mn/C and Pt-Cu/C Alloys

Ghavidel¹,

Easton²

2019

Preprint

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Pt-Mn and Pt-Cu alloys with low Pt contents have been previously shown to be highly active for the ethanol oxidization reaction. Here we examined these alloys for their activity towards the oxygen reduction reaction (ORR) in acidic media. The ORR activity of these alloys has also compared to the Pt/C and Pt-Sn/C commercial samples. In addition, the effect of heat treatment and formation of ordered structures on the ORR activity in both Pt-Cu and Pt-Mn systems were investigated. The highest Von-set was recorded for Pt/C. While adding the alloying elements may slightly reduce the ORR activity, these catalysts had no more that 25 at% Pt, which is promising from a cost stand point. In addition, our findings show that the heat treatment and formation of ordered phases had a great impact on the ORR activity of the alloyed samples.

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Facile synthesis of supported Pt–Cu nanoparticles with surface enriched Pt as highly active cathode catalyst for proton exchange membrane fuel cells

Cited by 51 publications

References 25 publications

Au–Cu–Pt ternary catalyst fabricated by electrodeposition and galvanic replacement with superior methanol electrooxidation activity

Au–Cu–Pt ternary catalyst fabricated by electrodeposition and galvanic replacement with superior methanol electrooxidation activity

Direct One‐pot Synthesis of Carbon Supported Ag‐Pt Alloy Nanoparticles as High Performance Electrocatalyst for Fuel Cell Application

The Oxygen Reduction Activity of Pt-Mn/C and Pt-Cu/C Alloys

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