Highly active PdNi bimetallic nanocubes electrocatalysts for the ethylene glycol electro-oxidation in alkaline medium

López-Coronel, Andrés; Torres-Pacheco, Luis J.; Bañuelos, Jennifer A.; Álvarez-López, Alejandra; Guerra‒Balcázar, Minerva; Álvarez‐Contreras, Lorena; Arjona, Noé

doi:10.1016/j.apsusc.2020.147210

Cited by 23 publications

(27 citation statements)

References 59 publications

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“…Different from EOR, platinum‐based is widely used in ethylene‐glycol oxidation. Firstly, catalysts based on Pd such as Pd/C, 196 Pd‐Ni, 212 Pd‐Ru, 213 and so on have also been reported to have greater reactivity than the Pt catalyst. Secondly, the increase in operation (relative to pure Pt) can also be seen 213,214 by Pt‐M alloy (M = Pd, Ag, Au, Ru, Ni, Fe, Pb, etc.)…”

Section: Alkaline Direct Alcohol Fuel Cellsmentioning

confidence: 99%

Progress and challenges: Review for direct liquid fuel cell

et al. 2021

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Summary Direct liquid fuel cell (DLFC) is one of the leading fuel cell types due to their great features of superior energy density, modest configuration, small size in fuel container, immediate boosting, and effortless storage and carriage. Commercially used liquid fuel types are prepared using alcohols, such as methanol or ethanol, glycol, and acids. DLFCs face great challenges although they are potentially far‐reaching depending on the expensive catalysts and the use of high‐loading catalyst. More questions that should be addressed to ensure excellent DLFC performance include cathode flooding, fuel crossover, numerous side yield production, fuel security, and unverified elongated‐duration robustness. Further studies need to be carried out to ensure the continuous improvement of the quality of DLFCs' performance and their penetration in the commercial market. To date, direct liquid fuel cells made of methanol and ethanol have been successfully produced in commercial scale, but other types of DLFCs are still under study. In this review, introduction to DLFC will be discussed by covering work and commercialization as well as recent progress and challenges encountered.

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Section: Alkaline Direct Alcohol Fuel Cellsmentioning

confidence: 99%

Progress and challenges: Review for direct liquid fuel cell

et al. 2021

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“…The electrode surface area (ESA) can be influenced by changing the size of the catalytic particles. One of the most popular methods for increasing the ESA is the usage of catalytic material in the form of nanoparticles because of their high surface-to-volume ratio, which results in higher activity and immunity to poisoning in the final material [ 22 , 23 , 24 ]. There are almost endless possibilities regarding the shapes of nanomaterials, but the most popular ones are one-dimensional nanomaterials (nanowires) [ 25 , 26 ], nanocubes [ 24 , 27 ], nanocrystals [ 23 , 28 , 29 , 30 , 31 ], spheres [ 23 , 32 ] and hexagons.…”

Section: Structure Of Anodic Materialsmentioning

confidence: 99%

“…The second group of popular electrocatalytic materials for EGOR is based on palladium. Even though this metal is more abundant than platinum [ 22 , 36 , 39 , 183 ], its price is higher [ 22 ], but because of its unique catalytic properties and higher stability, this disadvantage can be balanced by the higher efficiency of the oxidation processes [ 22 ]. During the oxidation of polyalcohols on the surface of palladium-based materials, higher peak current densities than in the case of platinum-based electrodes are observed, and the stability of such materials in alkaline media, which provide favorable conditions for such reactions, is remarkable [ 22 , 36 , 63 , 183 ].…”

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

“…Similar to other catalytic materials, the activity of palladium-based electrodes can be enhanced by doping with other elements that can either modify the surface process mechanism [ 63 ], such as the bifunctional mechanism [ 22 , 39 ] or change the electronic structure of the main metal [ 36 , 148 , 183 , 184 ], thus improving its catalytic performance. Other modifications can be carried out by using highly conductive support materials, which can improve the electron transfer between the electrode and adsorbed molecules [ 36 , 183 , 185 ], or by preparing catalytic materials with high numbers of surface defects, which can improve the charge and mass transfer and decrease the energetic barriers in anodic materials [ 22 , 184 ].…”

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

“…Different doping metals change the reaction rate through different mechanisms. Dopants, such as bismuth [ 39 , 154 ] or nickel [ 22 , 186 , 187 ] in palladium result in a bifunctional mechanism that involves the oxidation of alcohol on the palladium atoms and water activation taking place on the surface of the doping elements. This provides the hydroxide ions necessary for complete alcohol oxidation.…”

Section: Electrooxidation Of Alcoholsmentioning

confidence: 99%

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Effect of Anode Material on Electrochemical Oxidation of Low Molecular Weight Alcohols—A Review

Wala

Simka

2021

Molecules

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The growing climate crisis inspires one of the greatest challenges of the 21st century—developing novel power sources. One of the concepts that offer clean, non-fossil electricity production is fuel cells, especially when the role of fuel is played by simple organic molecules, such as low molecular weight alcohols. The greatest drawback of this technology is the lack of electrocatalytic materials that would enhance reaction kinetics and good stability under process conditions. Currently, electrodes for direct alcohol fuel cells (DAFCs) are mainly based on platinum, which not only provides a poor reaction rate but also readily deactivates because of poisoning by reaction products. Because of these disadvantages, many researchers have focused on developing novel electrode materials with electrocatalytic properties towards the oxidation of simple alcohols, such as methanol, ethanol, ethylene glycol or propanol. This paper presents the development of electrode materials and addresses future challenges that still need to be overcome before direct alcohol fuel cells can be commercialized.

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Pd/fMC−NiO Synergistic, Promotional Effect and Cooperation Induced Electrocatalysis towards Ethylene Glycol Electrooxidation: Experimental Approach and DFT Calculations

Matthews,

Dolla,

Mbokazi

et al. 2024

ChemElectroChem

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Direct alcohol fuel cells (DAFCs) face several challenges such as carbon support corrosion, poor kinetics, and long‐term stability, requiring improved electrocatalyst support development. We synthesized 5 %Pd/fMC−NiO using a microwave‐assisted sodium borohydride‐enhanced polyol method. X‐ray photoelectron spectroscopy, transmission electron microscope, and X‐ray diffractometry probed the material's surface composition, morphology, and structure. ICP‐OES is employed to quantify palladium loading. Fourier Transform Infrared Spectroscopy mapped the functional groups. Cyclic voltammetry, linear sweep voltammetry, electrochemical impedance spectroscopy, and chronoamperometry show that the 5 %Pd/fMC−NiO has the lowest activation energy, and with that, the best electroactivity, which is ~16 times higher compared to commercial Pd/C; additionally, the catalyst shows anti‐poisoning properties, and long‐term durability. This is merited to the cooperation and promotional effect of Pd/fMC−NiO. The electrocatalysts’ electroactivity improved via enhanced electron movement instigated by NiO. This study introduced the parallelism effect concept borrowed from the graphite structure for controlled electron channeling the 5 % Pd/fMC−NiO electrocatalyst. The theoretical calculations corroborated the experimental findings that our approach favors anchoring and dispersing Pd NPs uniformly, demonstrating NiO′s cooperative and promotional effects. Thus, opening new opportunities for the development of electrocatalysts for high‐performance DAFCs.

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Highly active PdNi bimetallic nanocubes electrocatalysts for the ethylene glycol electro-oxidation in alkaline medium

Cited by 23 publications

References 59 publications

Progress and challenges: Review for direct liquid fuel cell

Progress and challenges: Review for direct liquid fuel cell

Effect of Anode Material on Electrochemical Oxidation of Low Molecular Weight Alcohols—A Review

Pd/fMC−NiO Synergistic, Promotional Effect and Cooperation Induced Electrocatalysis towards Ethylene Glycol Electrooxidation: Experimental Approach and DFT Calculations

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