Bimetallic Pd–Zn nanoalloys supported on Vulcan XC-72R carbon as anode catalysts for oxidation process in formic acid fuel cell

Fathirad, Fariba; Afzali, Daryoush; Mostafavi, Ali

doi:10.1016/j.ijhydene.2016.05.098

Cited by 29 publications

(8 citation statements)

References 25 publications

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“…46-1043), respectively. [9][10][11][12] Compared with Pd/C and Pd/rGO, there are no new peaks or obvious peak shift observed for all the Pd x Ni/rGO catalysts, suggesting that the alloy of Pd-Ni has not been formed under the present preparation condition. [12,29] Furthermore, there are no diffraction peaks of metallic Ni or Ni oxides/hydroxides observed for Pd x Ni/rGO, indicating that most of Ni may exist in amorphous phase.…”

Section: Resultsmentioning

confidence: 99%

“…So the large current peak at about 0.16 V and the small peak at about 0.56 V can correspond to formic acid oxidation via the direct pathway of Equation (1) and the CO pathway of Equation (2), respectively. [11,12,36] For all the electrodes, the peak at about 0.16 V is much larger than that at about 0.56 V, indicating that the formic acid oxidation at the as-prepared catalysts is mainly through the direct pathway.…”

Section: Electro-catalytic Performance Of the Catalystsmentioning

confidence: 99%

“…[1,[7][8][9] Therefore, tremendous efforts have been made to improve the stability of Pd catalysts by alloying or modifying Pd with other metal such as Ag, Pt, Cu, Zn, Ni, and Pb. [3][4][5][9][10][11][12][13] To enhance the catalytic performance of Pd and minimize its use simultaneously, the other strategy is to explore novel and excellent supporting materials to disperse Pd-based particles effectively. Up to date, many kinds of carbon materials such as carbon nanofibers, mesoporous carbon and carbon nanotubes have been fabricated and used as the supports for catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…Up to date, many kinds of carbon materials such as carbon nanofibers, mesoporous carbon and carbon nanotubes have been fabricated and used as the supports for catalysts. [6,11,[14][15][16] Graphene, as a two-dimensional material with a monolayer of carbon atoms, has been suggested to be a promising support material in the field of fuel cells because of its remarkable large surface area, high chemical stability and electrical conductivity. [17][18][19][20][21][22][23] Among graphene materials, reduced graphene oxide (rGO) can be prepared on a large scale and at low cost by chemical reduction of graphene oxide.…”

Section: Introductionmentioning

confidence: 99%

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Facile Synthesis of Pd‐Ni Nanoparticles on Reduced Graphene Oxide under Microwave Irradiation for Formic Acid Oxidation

Liu

Han

et al. 2017

Chin. J. Chem.

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Pd and PdxNi nanoparticles have been supported on reduced graphene oxide (Pd/rGO and PdxNi/rGO) by using the microwave‐assisted heating method in glycol. The morphology, composition and electrochemical performance have been characterized by TEM, XRD, XPS and electrochemical methods. The XRD and XPS results show that there are no PdNi alloy particles formed in PdxNi/rGO and the composites exist mostly in the form of Pd0 and NiOOH species. The electrochemical results reveal that PdxNi/rGO synthesized from the feeding source of Pd and Ni with an atomic ratio of 4∶1 exhibits higher activity, better stability and smaller electron transfer resistance toward formic acid electro‐oxidation compared with commercial Pd/C, Pd/rGO and other PdxNi/rGO samples. The excellent electrocatalytic performance indicates that the addition of appropriate amount of Ni can greatly enhance the activity and stability of Pd catalysts for formic acid oxidation.

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Section: Resultsmentioning

confidence: 99%

Section: Electro-catalytic Performance Of the Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Facile Synthesis of Pd‐Ni Nanoparticles on Reduced Graphene Oxide under Microwave Irradiation for Formic Acid Oxidation

Liu

Han

et al. 2017

Chin. J. Chem.

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“…Bimetallic catalysts have been extensively studied for DFAFC to solve the poisoning and stability problems in Pt and Pd catalysts. The addition of a second metal in Pt-and Pd-based catalysts, such as Ir [8], Zn [5,16,17], Co [2,14], Sn [18,19], and V [20] at a suitable ratio, can increase the electrochemical performance toward formic acid oxidation compared with Pt and Pd monometallic catalysts. Zhang et al [19] found that the addition of Sn could modify Pd catalyst by electronic effect.…”

Section: Introductionmentioning

confidence: 99%

Improving the electrocatalytic activity for formic acid oxidation of bimetallic Ir–Zn nanoparticles decorated on graphene nanoplatelets

Azam

Isahak

Zainoodin

et al. 2020

Mater. Res. Express

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A graphene nanoplatelet (GNP)-supported Ir-Zn catalyst (Ir-Zn/GNP) was fabricated by H 2 reduction to discover an alternative for non-platinum and non-palladium catalysts as an anode catalyst in direct formic acid fuel cell (DFAFC). The obtained Ir-Zn/GNP catalyst with ratio of Ir: Zn=50:50 (Ir 50 Zn 50 /GNP) exhibited better electrocatalytic activity than GNP-supported iridium catalyst (Ir/GNP) for formic acid oxidation. Although the oxidation peak current density of Ir50Zn50/GNP was slightly lower than that of Ir/GNP, the oxidation peak potential shifted more negatively (193 mV) than Ir/GNP with higher value of the ratio of forward scan to reverse the scan peak current (If/Ib). The presence of Zn also enhanced the power density and current generation with increased performance stability in a passive DFAFC cell tests. The improvement of the electrochemical performance was ascribed to the ensemble effect where the addition of Zn could modify the Ir atom arrangement, thereby promoting the oxidation through dehydrogenation pathway. However, extremely high Zn content would inhibit oxidation capability because Zn atoms might reduce the Ir catalytic sites. A new alternative for non-Pt and non-Pd anode catalysts for DFAFC applications was successfully achieved.

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Facile Synthesis of a Porous Pd/Cu Alloy and its Enhanced Performance toward Methanol and Formic Acid Electrooxidation

Yan

Wang

et al. 2017

ChemPlusChem

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Reported is a porous Pd/Cu alloy catalyst synthesized by a one‐pot method, in which the Pd/Cu alloy is formed by using l‐ascorbic acid as reducing agent to simultaneously reduce the copper precursor and the palladium precursor. The copper incorporated with Pd can reduce the cost of the catalyst and enhance the catalytic performance. The morphology of the Pd/Cu alloy catalyst can be controlled by altering the ratios of Pd to Cu. Electrochemical characterizations indicate that Pd/Cu alloy catalysts possess good activity and long‐term stability for the electrooxidation of methanol and formic acid. Compared with commercial Pd/C, the as‐prepared Pd65Cu35 shows enhanced activities of electrooxidation of methanol and formic acid. This study highlights an easy strategy to obtain the shape‐controlled Pd/Cu alloyed catalysts and their potential application as electrocatalysts in fuel cells or other fields.

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Bimetallic Pd–Zn nanoalloys supported on Vulcan XC-72R carbon as anode catalysts for oxidation process in formic acid fuel cell

Cited by 29 publications

References 25 publications

Facile Synthesis of Pd‐Ni Nanoparticles on Reduced Graphene Oxide under Microwave Irradiation for Formic Acid Oxidation

Facile Synthesis of Pd‐Ni Nanoparticles on Reduced Graphene Oxide under Microwave Irradiation for Formic Acid Oxidation

Improving the electrocatalytic activity for formic acid oxidation of bimetallic Ir–Zn nanoparticles decorated on graphene nanoplatelets

Facile Synthesis of a Porous Pd/Cu Alloy and its Enhanced Performance toward Methanol and Formic Acid Electrooxidation

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