The nickel supported platinum catalyst for anodic oxidation of ethanol in alkaline medium

Mukherjee, Parthasarathi; Bagchi, Joyeeta; Dutta, Suman; Bhattacharya, Swapan Kumar

doi:10.1016/j.apcata.2015.09.013

Cited by 35 publications

(7 citation statements)

References 41 publications

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“…The M–OH may destroy Pt–CO via an electrochemical reaction in an acidic medium depicted in Equation (). [ 112 ] Marinho et al [ 113 ] investigated the addition of palladium as second metal to platinum toward ethylene glycol electro‐oxidation in alkaline media. CV and chronoamperomtery tests were used to study the EGOR in an alkaline medium on PtPd/C.…”

Section: Electrocatalysismentioning

confidence: 99%

Electrocatalyst Performances in Direct Alcohol Fuel Cells: Defect Engineering Protocols, Electrocatalytic Pathways, Key Parameters for Improvement, and Breakthroughs on the Horizon

Matthews,

Mbokazi,

Dolla

et al. 2023

Small Science

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In direct alcohol fuel cells (DAFCs), energy conversion co‐occurs at the anode (alcohol oxidation reaction [AOR]) and cathode (oxygen reduction reaction [ORR]). The sluggishness of AOR and ORR needs highly electrocatalytically active and stable electrocatalysts that boost electrokinetics, which is central in electrocatalysts’ architectural design and modulation. This design entails enhanced engineering synthesis protocols, heteroatomic doping, metallic doping/alloying, and deliberate introduction of defective motifs within the electrocatalyst matrix. The electrocatalyst activity and behavior depend on the electrocatalysts’ nature, type, composition, and reaction media, acidic or alkaline. Alkaline media permits cheap nonplatinum group metals. This review elucidates the roles and electrocatalytic pathways on different AOR and ORR electrocatalysts and outlines the aspects distinguishing ORR in alkaline and acidic media. It gives up‐to‐date and ultramodern strategies, protocols, and underlying mechanisms pointing to the efficacy and efficiency of electrocatalysts. The focus centers on heteroatomic, metallic dopants, defects effects correlated to electrocatalytic properties and experimental and theoretical findings. For the advancement in the field, the present study discusses critical parameters for improving the performances of electrocatalysts for DAFCs and breakthroughs on the horizon. Conclusively, knowledge gaps and prospects of these materials for industrial viability and reigning futuristic research directions are presented.

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Section: Electrocatalysismentioning

confidence: 99%

Electrocatalyst Performances in Direct Alcohol Fuel Cells: Defect Engineering Protocols, Electrocatalytic Pathways, Key Parameters for Improvement, and Breakthroughs on the Horizon

Matthews,

Mbokazi,

Dolla

et al. 2023

Small Science

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“…This happens as a significant quantity of PdO and carbonaceous intermediates have accumulated on the surface with repeated cycling. The PdO that formed blocked the active sites and the peak current forward scan decreased and the steady-state was observed [51]. The mechanism of methanol electrooxidation in alkaline media can be represented by Equations ( 5)-( 9): The cathodic peak at region −0.5 to −0.1 V in the repeated CV was due to the reduction of PdO formed during the anodic scan, as shown in Equation ( 4):…”

Section: Cyclic Voltammetry Testingmentioning

confidence: 99%

NiPd Supported on Mesostructured Silica Nanoparticle as Efficient Anode Electrocatalyst for Methanol Electrooxidation in Alkaline Media

et al. 2020

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The direct methanol fuel cell (DMFC) is a portable device and has the potential to produce 10 times higher energy density than lithium-ion rechargeable batteries. It is essential to build efficient methanol electrooxidation reaction electrocatalysts for DMFCs to achieve their practical application in future energy storage and conversion. A catalyst consisting of nickel–palladium supported onto mesostructured silica nanoparticles (NiPd–MSN) was synthesized by the wet impregnation method, while MSN was synthesized using the sol-gel method. MSN act as a catalyst support and has very good characteristics for practical support due to its large surface area (>1000 m2/g) and good chemical and mechanical stability. The microstructure and catalytic activity of the electrocatalysts were analyzed by X-ray diffraction (XRD), Fourier transform infrared (FTIR), field emission scanning electron microscopy (FESEM), Brunauer–Emmet–Teller (BET) theory, X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), and chronoamperometry (CA). XRD showed that the NiPd–MSN electrocatalysts had a high crystallinity of PdO and NiO, while FESEM displayed that NiPd was dispersed homogeneously onto the high surface area of MSN. In alkaline media, the catalytic activity toward the methanol oxidation reaction (MOR) of NiPd–MSN demonstrated the highest, which was 657.03 mA mg−1 more than the other electrocatalysts. After 3600 s of CA analysis at −0.2 V (vs. Ag/AgCl), the MOR mass activity of NiPd–MSN in alkaline media was retained at a higher mass activity of 190.8 mA mg−1 while the other electrocatalyst was significantly lower than that. This electrocatalyst is a promising anode material toward MOR in alkaline media.

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“…With this synergistic effect, FAO activity was increased by 67 times compared to that of Pt NPs supported directly on a glassy electrode. Ni‐based supports have also attracted abundant research interest: the precious metals in combination with Ni‐based supports reported recently involve Au, Pt, Pd and bimetallic Pt−Rh. Nevertheless, their applications in anode reactions differ from each other, primarily depending on the category of precious metals as well as the level of synergy.…”

Section: Self‐supported/non‐precious Metal Materialsmentioning

confidence: 99%

“…For example, Au@Ni nanoarrays prepared by template‐assisted electro‐deposition of Ni, followed by galvanostatic deposition of Au, showed excellent reactivity towards NaBH 4 oxidation . On the other hand, Pt and Pt−Rh catalysts deposited on Ni supports were used for ethanol oxidation, accelerated by Pt‐surface‐generated oxidative species . Pd/NiO catalytic system was employed for methanol oxidation .…”

Section: Self‐supported/non‐precious Metal Materialsmentioning

confidence: 99%

Synergistic Supports Beyond Carbon Black for Polymer Electrolyte Fuel Cell Anodes

Huang

Babu

et al. 2018

ChemCatChem

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Polymer electrolyte fuel cells (PEFCs) are among the most advanced energy technologies with low operating temperatures, high energy densities, ease of transportation and storage. However, the deficiencies such as low activity and high cost of the electrocatalysts at anodes greatly hinder their commercialization. The commonly used carbon black supports lack the capacity of regulation over the supported noble metals towards efficient electro‐catalytic oxidation of fuels. In this Mini‐Review, the prerequisite factors in advanced supports are outlined, ranging from self‐supported precious metal alloys as well as non‐noble metal materials, while simultaneously revealing the superiorities of some advanced supports beyond carbon black in terms of electronic conductivity, synergy with surface precious metals, chemical and electrochemical stability, and other possible interactions. The effects arisen from microscopic morphology, nano‐structure, and composition on the electrocatalytic activity/stability are also discussed. Finally, several of the most promising supports are highlighted, and the research trends of synergistic supports in future PEFCs are predicted.

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The nickel supported platinum catalyst for anodic oxidation of ethanol in alkaline medium

Cited by 35 publications

References 41 publications

Electrocatalyst Performances in Direct Alcohol Fuel Cells: Defect Engineering Protocols, Electrocatalytic Pathways, Key Parameters for Improvement, and Breakthroughs on the Horizon

Electrocatalyst Performances in Direct Alcohol Fuel Cells: Defect Engineering Protocols, Electrocatalytic Pathways, Key Parameters for Improvement, and Breakthroughs on the Horizon

NiPd Supported on Mesostructured Silica Nanoparticle as Efficient Anode Electrocatalyst for Methanol Electrooxidation in Alkaline Media

Synergistic Supports Beyond Carbon Black for Polymer Electrolyte Fuel Cell Anodes

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