Synthesis and characterization of electrodeposited Ni–Pd alloy electrodes for methanol oxidation

Kumar, K. Suresh; Haridoss, Prathap; Seshadri, S.K.

doi:10.1016/j.surfcoat.2007.07.035

Cited by 83 publications

(33 citation statements)

References 18 publications

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“…Nickel-modified Pd electrodes have been reported as catalysts with excellent performances in ethanol oxidation reaction (EOR) such as the activity, the low overpotentials and the improved poison resistances. Examined parameters of EOR such as onset potential reaction and long-term stability show that among a series of graphene (G)-supported Ni x Pd 100−x binary alloyed catalysts, Ni 50 Pd 50 /G catalyst exhibits 60 mV lower onset potential compare to Ni 0 Pd 100 /G catalysts and current density approximately 8, 4, and 1.7 times superior than that of Ni 75 Pd 25 , Ni 0 Pd 100 /G, and Ni 25 Pd 75 /G catalysts, respectively [6]. The mass activity of the Pd 83 Ni 17 hollow nanospheres aerogel is 5.6-fold higher than that of the commercial Pd/C catalyst [14] while the mass activity of porous bimetallic PdNi catalyst is 3.5 times higher compared to the commercial Pd/C [15].…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, among the various methods, electrodeposition is recognized as a simple and versatile method to prepare bimetallic surfaces. Several methods for PdNi alloy electrodeposition can be find in the literature such as: doublepotential step electrodeposition technique from the solution containing NiSO 4 , H 2 PdCl 4 and Na 2 SO 4 [23]; cathodic deposition from the solution containing PdCl 2 , H 2 SO 4 , NH 4 Cl and NiCl 2 using hydrogen dynamic bubble template producing three-dimensional hierarchical pores of intercomnected dendrite walls [ 24 ]; electrodeposition in the presence of complexing agent, ethylenediamine [25,26]; electrodeposition from a ionic liquid as electrolyte [16,27]; physical vapour deposition which was used to obtain palladium-modified nickel foam material [19].…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical behavior of electrodeposited Pd and PdNi coatings for the ethanol oxidation reaction in alkaline solution

Lović

Jović

2017

J. Electrochem. Sci. Eng.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Electrochemical behavior of electrodeposited Pd and PdNi coatings for the ethanol oxidation reaction in alkaline solution

Lović

Jović

2017

J. Electrochem. Sci. Eng.

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“…Synthesis and characterisation of electrodeposited Ni-Pd alloy electrodes for methanol oxidation in alkaline electrolyte was studied by Kumar et al [71]. Structural characterisation of the electrocatalysts showed that the Ni-Pd catalysts formed a complete solid solution in the alloy.…”

Section: Non-precious Metal Catalystsmentioning

confidence: 99%

Principles and Materials Aspects of Direct Alkaline Alcohol Fuel Cells

2010

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Direct alkaline alcohol fuel cells (DAAFCs) have attracted increasing interest over the past decade because of their favourable reaction kinetics in alkaline media, higher energy densities achievable and the easy handling of the liquid fuels. In this review, principles and mechanisms of DAAFCs in alcohol oxidation and oxygen reduction are discussed. Despite the high energy densities available during the oxidation of polycarbon alcohols they are difficult to oxidise. Apart from methanol, the complete oxidation of other polycarbon alcohols to CO 2 has not been achieved with current catalysts. Different types of catalysts, from conventional precious metal catalyst of Pt and Pt alloys to other lower cost Pd, Au and Ag metal catalysts are compared. Non precious metal catalysts, and lanthanum, strontium oxides and perovskite-type oxides are also discussed. Membranes like the ones used as polymer electrolytes and developed for DAAFCs are reviewed. Unlike conventional proton exchange membrane fuel cells, anion exchange membranes are used in present DAAFCs. Fuel cell performance with DAAFCs using different alcohols, catalysts and membranes, as well as operating parameters are summarised. In order to improve the power output of the DAAFCs, further developments in catalysts, membrane materials and fuel cell systems are essential. OPEN ACCESSEnergies 2010, 3 1500

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“…According to Mohamedi et al [19], a small addition of Al to Ni produces excellent electrodes in molten carbonate fuel cells. Kumar et al [20] stated that there is a wide range of composition of Ni-Pd electrodes which used as anode material in methanol oxidative fuel cells in the alkaline medium. Some research studies have discussed the electrocatalytic behavior of nanocrystalline Ni-Co electrodeposits [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Morphology and Electrochemical Characterization of Electrodeposited Nanocrystalline Ni-Co Electrodes for Methanol Fuel Cells

Abdel-Karim

Ramadan

El‐Raghy

2018

Journal of Nanomaterials

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An electrocatalytic electrode surface was developed for alcoholic fuel cell by electrodeposition of Ni-Co alloy on a 301 stainless steel substrate. Material characterization by EDX and XRD confirmed deposition of Ni-Co alloy on stainless steel surfaces with a cobalt content of 15-35%. SEM showed nodular and/or angular particles with some subparticles embedded within the coarse nodules. Increasing the deposition current density as well as deposition time leads to deposition of Ni-Co alloys characterized by coarse angular morphology with lower cobalt content. The electrocatalytic activity of the coated electrodes was characterized by potentiodynamic polarization test, electrochemical impedance spectroscopy (EIS), and cyclic voltammetry (CV) tests in anodic solution for electrochemical oxidation of methanol. Polarization study showed very much higher current density for the coated electrode compared to bare stainless steel. According to the EIS test in 1 M methyl alcohol acidic solution, it was found that polarization resistance of the coated sample was much lower compared to the bare substrate. The electrical equivalent circuit at the metal solution interface was found to be matching Randle with Warburg resistance. The results of the CV test showed higher peaks for alcohol oxidation and oxygen reduction compared to the bare substrate. The alloy coating with increased effective surface area leads to enhancement in the electrocatalytic activity of the electrodes. The alloys deposited at current densities of 50 and 80 mA/cm 2 for 30 minutes (15-16% Co) had higher catalytic activity of the Ni-Co nanocrystalline deposits for methanol oxidation for direct methanol fuel cells, than those under other deposition conditions.

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Synthesis and characterization of electrodeposited Ni–Pd alloy electrodes for methanol oxidation

Cited by 83 publications

References 18 publications

Electrochemical behavior of electrodeposited Pd and PdNi coatings for the ethanol oxidation reaction in alkaline solution

Electrochemical behavior of electrodeposited Pd and PdNi coatings for the ethanol oxidation reaction in alkaline solution

Principles and Materials Aspects of Direct Alkaline Alcohol Fuel Cells

Morphology and Electrochemical Characterization of Electrodeposited Nanocrystalline Ni-Co Electrodes for Methanol Fuel Cells

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