Electrocatalytic oxidation of methanol at Ni–Al layered double hydroxide film modified electrode in alkaline medium

Wang, Yinling; Zhang, Dandan; Wei, Peng; Liu, Lin; Li, Maoguo

doi:10.1016/j.electacta.2011.04.049

Cited by 103 publications

(71 citation statements)

References 32 publications

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“…As can be seen, both CV curves show a similar methanol oxidation current peak in the forward scan and an oxidation peak in the backward scan corresponding to the removal of the residual carbonaceous species formed during methanol oxidation in the forward scan [8,53]. Meanwhile, the anodic peak appeared during the forward scan reappeared almost at the same potential during the backward scan [55]. As we know, the magnitude of the peak current density in the forward scan indicates the electrocatalytic activity of the electrocatalyst for methanol oxidation.…”

Section: Electrocatalytic Characterizationmentioning

confidence: 58%

“…Figure 3 shows the cyclic voltammograms (CVs) of the PtNPs/Ni-Al LDH and Ni-Al LDH/GCE in 0.5 M NaOH solution. Both electrodes show the CVs with a pair of redox peaks between 0.2 V to 0.5 V, which can be attributed to the quasireversible one electron transfer of Ni(III)/Ni(II) in this condition, suggesting that the Ni-Al LDH was successfully electrofabricated on the surface of GCE [55]. As reported in the literatures [52] for a Ni-Al LDH, the redox process in basic medium can be represented by the following reaction:…”

Section: Physicochemical Characterizationmentioning

confidence: 95%

“…With further increase in the electrodeposition times, the methanol oxidation current density started to decrease [41]. Possible explanation could be that the decreasing the real surface area of the electrocatalyst due to the agglomeration of PtNPs or decreasing the conductivity of the NiAl LDH film by increasing the thickness [41,55].…”

Section: Electrocatalytic Characterizationmentioning

confidence: 99%

“…While after coating the GCE surface with PtNPs, the XRD pattern of the PtNPs/GCE ( Figure 1B respectively [54]. Figure 1C presents the XRD pattern and the characteristic reflections of the Ni-Al LDH/GCE structure with a series of sharp and intense lines corresponding to structure of Ni-Al LDH, four peaks appeared at 2θ = 10.02°, 19.86°, 34.52° and 60.73°, corresponding to the (003), (006), (012), and (110) diffraction planes [53,55,56]. The series of intense basal reflections for the Ni-Al LDH/GCE indicate that LDH film was successfully electrodeposited on GCE surface.…”

Section: Physicochemical Characterizationmentioning

confidence: 99%

“…It should be noted that, under a low concentration of methanol (0.1 M), the anodic peak current in the forward scan for methanol oxidation and cathodic peak current of Ni(III)/Ni(II) couple in the backward scan presented in the CV gram (inset of Figure 4) due to unmasking the cathodic current of Ni(III)/Ni(II) couple by the methanol oxidation peak [55].…”

Section: Electrocatalytic Characterizationmentioning

confidence: 99%

See 4 more Smart Citations

Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

Habibi

Ghaderi

2016

Bull. Chem. React. Eng. Catal.

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In this study, Ni-Al layered double hydroxide (LDH)-Pt nanoparticles (PtNPs) as an inorganic nanocomposite was electrosynthesized on the glassy carbon electrode (GCE) by a facile and fast two-step electrochemical process. Structure and physicochemical properties of PtNPs/Ni-Al LDH/GCE were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectrometry and electrochemical methods. Then, electrocatalytic and stability characterizations of the PtNPs/Ni-Al LDH/GCE for methanol oxidation in alkaline media were investigated in detail by cyclic voltammetry, chronoamperometry, and chronopotentiometry measurements. PtNPs/Ni-Al LDH/GCE exhibited higher electrocatalytic activity than PtNPs/GCE and Ni-Al LDH/GCE. Also, the resulted chronoamperograms indicated that the PtNPs/Ni-Al LDH/GCE has a better stability.

show abstract

Section: Electrocatalytic Characterizationmentioning

confidence: 58%

Section: Physicochemical Characterizationmentioning

confidence: 95%

Section: Electrocatalytic Characterizationmentioning

confidence: 99%

Section: Physicochemical Characterizationmentioning

confidence: 99%

Section: Electrocatalytic Characterizationmentioning

confidence: 99%

See 3 more Smart Citations

Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

Habibi

Ghaderi

2016

Bull. Chem. React. Eng. Catal.

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Hierarchical Layered Double Hydroxide Microspheres with Largely Enhanced Performance for Ethanol Electrooxidation

Shao

Ning

Zhao

et al. 2013

Adv Funct Materials

112

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Hierarchical MgFe-layered double hydroxide (LDH) microspheres with tunable interior structure are synthesized by a facile and cost-effective surfactant-templated method. Scanning and transmission electron microscopy images reveal that the obtained microspheres display a three-dimensional architecture with hollow, yolk − shell and solid interior structure, respectively, with continuous changes in specifi c surface area and pore-size distribution. Moreover, the hollow MgFe-LDH microspheres exhibit excellent electrocatalytic oxidation of ethanol in alkaline fuel cell, including high activity, long-term durability and cycling stability, owing to the signifi cantly improved faradaic redox reaction and mass transport. Therefore, this work provides a promising approach for the design and synthesis of structure tunable materials with largely enhanced ethanol electrooxidation behavior, which can be potentially used in noble metal-free alkaline fuel cells.

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Electrocatalytic Oxidation of Methanol over An Electrode with Ni‐MOF‐74 Catalyst

Wang

Chu

et al. 2021

ChemCatChem

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Developing non-noble metal catalysts for methanol oxidation in fuel cells is of importance. In this work, Ni-MOF-74 was synthesized through a simple solvothermal method and fully characterized. The as-made Ni-MOF-74 modified carbon paste electrode (Ni-MOF-74/CPE) was applied for methanol electrooxidation reaction in 0.1 M NaOH solution. Ni-MOF-74 had high electrochemical stability and exhibited good electrocatalytic property for methanol oxidation, a mechanism for the reaction was proposed, the current density increases impressively on Ni-MOF-74/CPE compared with carbon paste electrode, and a really high catalytic rate constant (k cat ) of 8.1 × 10 5 cm 3 • mol À 1 • s À 1 was obtained in this work. The given results indicate that Ni-MOF-74 can be a promising candidate of electrocatalysts for direct methanol fuel cells (DMFCs).

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Electrocatalytic oxidation of methanol at Ni–Al layered double hydroxide film modified electrode in alkaline medium

Cited by 103 publications

References 32 publications

Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

Electrosynthesized Ni-Al Layered Double Hydroxide-Pt Nanoparticles as an Inorganic Nanocomposite and Potentate Anodic Material for Methanol Electrooxidation in Alkaline Media

Hierarchical Layered Double Hydroxide Microspheres with Largely Enhanced Performance for Ethanol Electrooxidation

Electrocatalytic Oxidation of Methanol over An Electrode with Ni‐MOF‐74 Catalyst

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