Carbon supported PdO with improved activity and stability for oxygen reduction reaction in alkaline solution

Wu, Qiong; Rao, Zhaoxia; Yuan, Longyan; Jiang, Luhua; Sun, Gongquan; Ruan, Jianming; Zhou, Ziwei; Sang, Shangbin

doi:10.1016/j.electacta.2014.10.147

Cited by 21 publications

(21 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At 0.77 V, the kinetic current density was evaluated to be 11.7 mA cm -2 . Our prepared Pd 3 Pb/TiO 2 exhibits comparable kinetic current density with those observed for benchmarked Pd/carbon black (CB) (3 mA cm -2 at 0.77 V [42]) and Pt/CB (12.5 mA cm -2 at 0.8 V [43]), although the TiO 2 support material has high electron resistivity. A chronoamperometric study was conducted to investigate the durability of the catalyst for the ORR.…”

Section: Electrochemical Measurementssupporting

confidence: 67%

Enhancement of the electrocatalytic oxygen reduction reaction on Pd3Pb ordered intermetallic catalyst in alkaline aqueous solutions

et al. 2016

View full text Add to dashboard Cite

Enhancement of the oxygen reduction reaction (ORR) was examined with Pd 3 Pb ordered intermetallic nanoparticles (NPs) supported on titania (Pd 3 Pb/TiO 2 ). The Pd 3 Pb/TiO 2 catalyst was synthesized by a conventional wet chemical method with Pd and Pb ion precursors, a reducing agent and TiO 2 powder under ambient temperature. X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy measurements indicated the formation of the ordered intermetallic phase of Pd 3 Pb in the NP form on the TiO 2 surface. Electrochemical measurements showed that the Pd 3 Pb/TiO 2 catalyst markedly enhanced the ORR in an alkaline environment due to the unique surface of Pd 3 Pb NPs and the strong interaction between Pd 3 Pb and TiO 2 compared with TiO 2 -supported Pd, Pt, and PtPb NPs. The onset potential of Pd 3 Pb/TiO 2 was shifted toward a higher potential by 110-150 mV compared with Pd

show abstract

Section: Electrochemical Measurementssupporting

confidence: 67%

Enhancement of the electrocatalytic oxygen reduction reaction on Pd3Pb ordered intermetallic catalyst in alkaline aqueous solutions

et al. 2016

View full text Add to dashboard Cite

show abstract

“…A great deal of interest has recently been focused on the cheaper materials than platinum and the use of non-noble transition metals in alkaline media, in particular, the performance of alloys of Pd with non-noble metals for the oxidation of ethanol. In acidic environment, the complete oxidation of ethanol is difficult and the catalytic activities of the catalysts for ethanol oxidation reaction (EOR) could be significantly improved in alkaline media, where Pd-based catalyst has comparable or even better catalytic activity compared with Pt-based catalysts for ethanol oxidation [128,129]. This is why that the Pd-based materials are intensively studied for the oxidation of ethanol.…”

Section: Pd-based Catalysts For the Direct Ethanol Fuel Cells (Defcs)mentioning

confidence: 99%

Recent Development of Pd-Based Electrocatalysts for Proton Exchange Membrane Fuel Cells

2015

View full text Add to dashboard Cite

This review selectively summarizes the latest developments in the Pd-based cataysts for low temperature proton exchange membrane fuel cells, especially in the application of formic acid oxidation, alcohol oxidation and oxygen reduction reaction. The advantages and shortcomings of the Pd-based catalysts for electrocatalysis are analyzed. The influence of the structure and morphology of the Pd materials on the performance of the Pd-based catalysts were described. Finally, the perspectives of future trends on Pd-based catalysts for different applications were considered.

show abstract

“…The high resolution XPS spectra of Pd of four catalysts are shown in Figure . According to the previous report, the peaks positioned at 337.5 and 342.8 eV should be assigned to the Pd 3d 5/2 and Pd 3d 3/2 orbital, respectively. Hence, the chemical valence state of Pd element in catalyst o, b and c should be +2 .…”

Section: Resultsmentioning

confidence: 80%

“…According to the previous report, the peaks positioned at 337.5 and 342.8 eV should be assigned to the Pd 3d 5/2 and Pd 3d 3/2 orbital, respectively. Hence, the chemical valence state of Pd element in catalyst o, b and c should be +2 . That is to say, the element of Pd in the precursor of PdO had no chemical valence state change even after the pyrolysis process, further indicating that no metallic Pd was prepared in above catalysts.…”

Section: Resultsmentioning

confidence: 80%

The Significant Role of NiO in Enhancing the Electrocatalytic Activity of the Pyrolysis Products of the Mixture Containing PdO and Multiwalled Carbon Nanotubes for EOR

et al. 2017

View full text Add to dashboard Cite

A novel finding, that the pyrolysis products of the mixture containing NiO, PdO and multi-walled carbon nanotubes (MWCNTs) (denoted as Pd x Ni y /MWCNTs), as compared to the system having only PdO and MWCNTs, have significant electrocatalytic activity for ethanol oxidation reaction (EOR), is reported for the first time in this work. The effects of the atomic ratio of Pd to Ni on the physicochemical properties of the synthesized Pd x Ni y /MWCNTs composites are basically investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). XRD results indicate that the crystallinities of the prepared catalysts are closely related to the atomic ratio of Pd to Ni. SEM observations reveal that the morphologies of the synthesized catalysts are also strongly affected by the atomic ratio of Pd to Ni. The electrocatalytic activity of the prepared Pd x Ni y /MWCNTs materials towards EOR is examined, and the results demonstrate that the best electrocatalytic activity for EOR is exhibited by the catalyst with an atomic ratio of Pd to Ni 1:1. Showing the fact, that the pyrolysis product of the mixture having PdO and NiO and MWCNTs has excellent electrocatalytic activity for EOR, is the main contribution of this work, which is believed to have developed a novel cost-effective electrocatalyst for EOR. Abstract Text, 800-1000 characters.

show abstract

Carbon supported PdO with improved activity and stability for oxygen reduction reaction in alkaline solution

Cited by 21 publications

References 64 publications

Enhancement of the electrocatalytic oxygen reduction reaction on Pd3Pb ordered intermetallic catalyst in alkaline aqueous solutions

Enhancement of the electrocatalytic oxygen reduction reaction on Pd3Pb ordered intermetallic catalyst in alkaline aqueous solutions

Recent Development of Pd-Based Electrocatalysts for Proton Exchange Membrane Fuel Cells

The Significant Role of NiO in Enhancing the Electrocatalytic Activity of the Pyrolysis Products of the Mixture Containing PdO and Multiwalled Carbon Nanotubes for EOR

Contact Info

Product

Resources

About