Optimization of manganese oxide amount on Vulcan XC-72R carbon black as a promising support of Ni nanoparticles for methanol electro-oxidation reaction

Hameed, R.M. Abdel

doi:10.1016/j.ijhydene.2015.08.065

Cited by 28 publications

(5 citation statements)

References 64 publications

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“…Figure b shows Cyclic voltammograms of PEDOT : PSS/ITO and rGO/PEDOT : PSS/ITO electrodes in presence of 0.5 M methanol and 0.5 M NaOH solution from +0.3 V to +0.7 V. The broad anodic peaks at 0.68 V and 0.59 V for PEDOT : PSS/ITO and rGO/PEDOT : PSS/ITO electrodes, respectively refer to the methanol electro‐oxidation. The CV curves related to methanol oxidation are similar to that reported in the literature . Anodic onset potential shifts towards lower potential side from 0.47 V to 0.40 V for rGO modified electrode due to faster electrochemical response towards methanol oxidation.…”

Section: Resultsmentioning

confidence: 99%

Electrocatalytic Acitivity of rGO/PEDOT : PSS Nanocomposite towards Methanol Oxidation in Alkaline Media

Baruah

Kumar

2018

Electroanalysis

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Increasing demand of alternative energy sources leads to the development of new electrocatalytic materials for fuel cells. In present work, we report the synthesis of rGO/PEDOT : PSS (reduced graphene oxide/ Poly (3,4‐ethylenedioxythiophene) : Polystyrene sulfonate) nanocomposite by in‐situ polymerization method using EDOT as precursor and the nanocomposite is used as anode catalyst for methanol oxidation. Structural and chemical characterizations such as XRD, FTIR and Micro‐Raman confirm the formation of the nanocomposite. From TEM image, growth of nanofibrous PEDOT : PSS on rGO nanosheets is observed. Electrochemical characterizations of rGO/PEDOT : PSS/ITO electrode are performed by Cyclic Voltammetry (CV), Electrochemical Impedance Spectroscopy (EIS) and Chronoamperometry (CA) measurements. Methanol oxidation reactions are performed in 0.5 M NaOH solution. The anodic current of the nanocomposite coated ITO is found be 37.5 mA at 0.59 V due to methanol electro‐oxidation and retentivity of the electrode is 92 % of initial scan after 800 cycles. The chronoamperometric results reveal that the nanocomposite modified electrode exhibits better stability with retention factor of 42.4 % up to 3000 seconds. The rGO/PEDOT : PSS/ITO electrode exhibits enhanced electrocatalytic activity towards methanol oxidation reaction due to larger surface area and excellent conductivity of rGO nanosheet.

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Section: Resultsmentioning

confidence: 99%

Electrocatalytic Acitivity of rGO/PEDOT : PSS Nanocomposite towards Methanol Oxidation in Alkaline Media

Baruah

Kumar

2018

Electroanalysis

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“…Likewise, the electrocatalytic performance of various nickel compounds have also been reformed through formation of binary hybrids using various kinds of supporting matrix both of carbonaceous and purely inorganic types as well, as illustrated in Table 1 and the obtained advantages observed due to binary nanocomposite formation have also been delineated [130‐145] …”

Section: Nickel‐based Electrocatalysts For Methanol Oxidationmentioning

confidence: 99%

“…[129] Likewise, the electrocatalytic performance of various nickel compounds have also been reformed through formation of binary hybrids using various kinds of supporting matrix both of carbonaceous and purely inorganic types as well, as illustrated in Table 1 and the obtained advantages observed due to binary nanocomposite formation have also been delineated. [130][131][132][133][134][135][136][137][138][139][140][141][142][143][144][145] Further, in a comparative study NiMoO 4 nanorods have been anchored on carbon and graphene supports via one pot hydrothermal method. The authors reported superior methanol electro-oxidation activity in the order NiMoO 4 / carbon > NiMoO 4 / graphene > pure NiMoO 4 electrodes under similar experimental conditions.…”

Section: Nickel-based and Nickel-compounds Based Binary Nanocomposite...mentioning

confidence: 99%

Recent Developments of Methanol Electrooxidation Using Nickel‐based Nanocatalysts

Majumdar¹,

Bhattacharya

2022

ChemistrySelect

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Studies of methanol electrooxidation reactions have achieved considerable advancements in the recent years for their encouraging contributions in the exciting fields of energy conversion and storage, organic syntheses, wastewater treatment, sensing, medicinal and environmental analyses, and many others thriving fields of modern technology. Accordingly, the fabrication of less expensive, efficient and decent quality electrocatalysts with high material stability, faster electro‐oxidation kinetics, as well as less carbonation and decent corrosion inhibition activities are highly urged. Consequently, scientists around the globe are in continuous search for alternative economical smart anode‐nanocatalysts for methanol oxidations with superior electrochemical performances. In the recent years, various inexpensive and readily‐available nanocatalysts of non‐noble metals like Ni, Co, Cu, etc., in reference to electrooxidation of organic molecules have been reported. The present work highlights the recent progress accomplished by rapidly flourishing nickel‐based electrocatalysts for electrooxidation of methanol. The discussion comprehensively includes the basic mechanistic understandings and fundamentals for achieving high efficacy of methanol electrooxidation with nickel‐based electrocatalysts. Also, the current challenges faced in this emerging area have been outlined to achieve superior, productive, and commercially viable catalysts for methanol electrooxidation in the near future.

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“…Cu/NiCu nanowires synthesized by the microemulsion method showed much higher activities than nickel nanoparticles in oxidizing methanol . The Ni–MnO x /C nanoparticles synthesized by Abdel Hameed using a microwave‐assisted method exhibited several times higher catalytic performance than ordinary Ni/C . A layered Ni–Cu alloy network of composition Ni 0.75 Cu 0.25 with microscopically interconnected branches and nanoscale dendritic tentacles showed a peak current density of 84 mA cm −2 .…”

Section: Introductionmentioning

confidence: 99%

“…[28] The Ni-MnO x /C nanoparticles synthesized by Abdel Hameed using am icrowave-assisted method exhibited several times higher catalytic performance than ordinaryN i/C. [29] Al ayered Ni-Cu alloy network of composition Ni 0.75 Cu 0.25 with microscopically interconnected branchesand nanoscale dendritic tentacles showed apeak current density of 84 mA cm À2 . [30] The peak current density of Co-Ni/RGO synthesized by the traditional polyol method reached 22.5 mA cm À2 for aC o/Ni ratio of 1:4.…”

Section: Introductionmentioning

confidence: 99%

Unusual Effect of Trace Water on the Structure and Activity of Ni_xCo_1−x Electrocatalysts for the Methanol Oxidation Reaction

Que

Yao

et al. 2020

ChemSusChem

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Highly active Ni‐based catalysts have attracted much attention but are still facing challenges owing to the immature synthetic method. Herein, polyhedral NixCo1−x alloy was prepared by a facile modified polyol method in which a trace amount of water could halve the particle size of the alloy. The Ni/Co ratios in NixCo1−x alloy strictly depended on the used amount of water owing to the different solubilities of the precursors. Among them, the Ni0.6Co0.4 nanoparticles obtained with 70 μL of deionized water exhibited the best performance in the methanol oxidation reaction with a peak current density of 116 mA cm−2 in the presence of 1 m NaOH+0.5 m CH3OH solution, which is higher than those of Ni0.7Co0.3 (80 mA cm−2) and Ni0.5Co0.5 (33 mA cm−2). The excellent performance of Ni0.6Co0.4 is attributed to the unique structure with appropriate Ni/Co ratio, which elongates the C−O bond in methanol and lowers the reaction free energy according to DFT calculations.

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Optimization of manganese oxide amount on Vulcan XC-72R carbon black as a promising support of Ni nanoparticles for methanol electro-oxidation reaction

Cited by 28 publications

References 64 publications

Electrocatalytic Acitivity of rGO/PEDOT : PSS Nanocomposite towards Methanol Oxidation in Alkaline Media

Electrocatalytic Acitivity of rGO/PEDOT : PSS Nanocomposite towards Methanol Oxidation in Alkaline Media

Recent Developments of Methanol Electrooxidation Using Nickel‐based Nanocatalysts

Unusual Effect of Trace Water on the Structure and Activity of Ni_xCo_1−x Electrocatalysts for the Methanol Oxidation Reaction

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Optimization of manganese oxide amount on Vulcan XC-72R carbon black as a promising support of Ni nanoparticles for methanol electro-oxidation reaction

Cited by 28 publications

References 64 publications

Electrocatalytic Acitivity of rGO/PEDOT : PSS Nanocomposite towards Methanol Oxidation in Alkaline Media

Electrocatalytic Acitivity of rGO/PEDOT : PSS Nanocomposite towards Methanol Oxidation in Alkaline Media

Recent Developments of Methanol Electrooxidation Using Nickel‐based Nanocatalysts

Unusual Effect of Trace Water on the Structure and Activity of NixCo1−x Electrocatalysts for the Methanol Oxidation Reaction

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Unusual Effect of Trace Water on the Structure and Activity of Ni_xCo_1−x Electrocatalysts for the Methanol Oxidation Reaction