Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

Cui, Xun; Xiao, Peng; Wang, Jing; Zhou, Ming; Guo, Wenlong; Yang, Yang; He, Yanjie; Wang, Zewei; Yang, Yingkui; Zhang, Yunhuai; Lin, Zhiqun

doi:10.1002/ange.201701149

Cited by 49 publications

(27 citation statements)

References 42 publications

(21 reference statements)

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“…Due to high cost of noble-metal catalysts and the declining oxygen reduction activity on the cathode of proton exchange membrane (PEM) fuel cells and metal-air batteries, recent research has witnessed intense investigation into the promising and versatile non-precious catalysts for the oxygen reduction reaction (ORR). [1][2][3][4][5] To this end, several low-cost non-noble-metal alternatives have emerged, including carbonbased materials, [6][7][8][9] non-precious transition metals and metal alloys (e.g., Fe, Co, Ni-Cu alloy), [10][11][12] and transition metal oxides (e.g., Fe 3 O 4 , Co 3 O 4 ). 13,14 However, transition metal oxides often possess high overpotentials.…”

Section: Introductionmentioning

confidence: 99%

Durable and Efficient Hollow Porous Oxide Spinel Microspheres for Oxygen Reduction

Wang

Liu

et al. 2018

Joule

Self Cite

205

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The oxygen reduction reaction performance of the hollow porous oxide spinel microspheres was investigated. The ZnMnCoO 4 possessed a high onset potential of 1.00 V and an outstanding durability in the alkaline solution. The electronic transition of Co 3+ ions was found to weaken the Co 3+ -OH bond and facilitate the O 2À /OH À displacement. Thus, it may offer promising potential for use as an effective catalyst with high oxygen reduction activity and durability in fuel cells and metal-air batteries, among other applications.

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Section: Introductionmentioning

confidence: 99%

Durable and Efficient Hollow Porous Oxide Spinel Microspheres for Oxygen Reduction

Wang

Liu

et al. 2018

Joule

Self Cite

205

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“…Sharp decrease of currents is observed within 100 s, then decay very slowly over 3000 s for both the samples. Initially, it is fast kinetic reaction due to available active sites for methanol adsorption, subsequently the number of active sites decrease gradually due to formation of intermediate species which cause poisoning of the active sites on the electrode causing decrease in current . Again the thickness of the diffusion layer increases due to accumulation of charges at electrode/electrolyte interface that also causes sudden drop of current within few seconds.…”

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: Noble Metal Nas For Chemical Catalysismentioning

confidence: 99%

“…Recently, a NiMo nanofilm has been electrodeposited on Cu foil in a choline chloride‐ethylene glycol based deep eutectic solvent . Besides, the electrochemical reduction has generated NiFe alloy and hierarchical NiCu branched nanostructures with dendritic feelers on each branch, providing enormous active sites (Figure d) …”

Section: Base Metal Nas For Chemical Catalysismentioning

confidence: 99%

Nanoalloy Materials for Chemical Catalysis

et al. 2018

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Nanoalloys (NAs), which are distinctly different from bulk alloys or single metals, take on intrinsic features including tunable components and ratios, variable constructions, reconfigurable electronic structures, and optimizable performances, which endow NAs with fascinating prospects in the catalysis field. Here, the focus is on NA materials for chemical catalysis (except photocatalysis or electrocatalysis). In terms of composition, NA systems are divided into three groups, noble metal, base metal, and noble/base metal mixed NAs. Their design and fabrication for the optimization of catalytic performance are systematically summarized. Additionally, the correlations between the composition/structure and catalytic properties are also mentioned. Lastly, the challenges faced in current research are discussed, and further pathways toward their development are suggested.

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Highly Branched Metal Alloy Networks with Superior Activities for the Methanol Oxidation Reaction

Abstract: Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: http://dx.

Cited by 49 publications

References 42 publications

Durable and Efficient Hollow Porous Oxide Spinel Microspheres for Oxygen Reduction

Durable and Efficient Hollow Porous Oxide Spinel Microspheres for Oxygen Reduction

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

Nanoalloy Materials for Chemical Catalysis

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