Active sites contribution from nanostructured interface of palladium and cerium oxide with enhanced catalytic performance for alcohols oxidation in alkaline solution

Wang, Fulong; Yu, Huaguang; Tian, Zhongxian; Xue, Huaiguo; Feng, Ligang

doi:10.1016/j.jechem.2017.12.011

Cited by 52 publications

(23 citation statements)

References 43 publications

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“…The spectrum survey is done to track the elements and interested elements are evidently observed ( Figure S3). A difference is found for the surface compositions (Table S2) spectrum [13] (Figure 4a). The CÀ N content is similar for CoÀ NÀ C/CNT-900-1 and CoÀ NÀ C/CNT-900-1-1, and it is ca.…”

Section: Resultsmentioning

confidence: 87%

Thermal Annealing Effect of Co−N−C/Carbon Nanotube on the Electrochemical Oxygen Reduction Reaction

Zong

Xue

et al. 2018

Energy Tech

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Section: Resultsmentioning

confidence: 87%

Thermal Annealing Effect of Co−N−C/Carbon Nanotube on the Electrochemical Oxygen Reduction Reaction

Zong

Xue

et al. 2018

Energy Tech

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“…Nyquist plots are generally known to be semicircular in structure and the smaller the diameter, the higher the electrocatalytic resistance. Furthermore, these semicircle diameters of Nyquist plots are related to charge transfer resistance (Rct) associated with the electrocatalytic activity of few‐layer graphene/ITO electrodes . EIS measurements of graphene/ITO electrodes and Nyquist plots for GOR are given in Figure A.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, these semicircle diameters of Nyquist plots are related to charge transfer resistance (Rct) associated with the electrocatalytic activity of few-layer graphene/ITO electrodes. 18,53,54 EIS measurements of graphene/ITO electrodes and Nyquist plots for GOR are given in Figure 8A. As shown in Figure 8A, the Rct resistances of the few-layer graphene/ITO electrodes were obtained in the order of G7 > G9 > G8 > G1 > G6 > G2 > G4 > G3 > G5 > ITO for GOR, respectively.…”

Section: Electrochemical Measurementsmentioning

confidence: 91%

Few‐layer graphene coated on indium tin oxide electrodes prepared by chemical vapor deposition and their enhanced glucose electrooxidation activity

2019

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At present, few‐layer graphene is deposited on copper (Cu) foil by chemical vapor deposition (CVD) method. Then, the few‐layer graphenes produced on the Cu foil are coated onto the indium tin oxide (ITO) electrode to investigate their glucose electrooxidation activities. Hexane and hydrogen flow rate and deposition time parameters with CVD method are examined on different Cu foils. These electrodes are characterized by scanning electron microscopy‐energy dispersive X‐ray analysis (SEM‐EDX), X‐ray photoelectron spectroscopy (XPS), and Raman spectroscopy. Furthermore, glucose electrooxidation is examined with cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) measurements. One could note that the graphene network is clearly visible from SEM images. The deconvoluted XPS spectrum indicates that carbon appeared in the form of non‐oxygenated ring C atoms for few‐layer graphene. The few‐layer graphene structure is confirmed by Raman analysis. Few‐layer graphene/ITO produced at 5 sccm Hexane and 50 sccm hydrogen flow rate and 20 minutes deposition time (G7/ITO) reveals the best electrode activity. The specific activity of G7/ITO electrode is obtained as 6.58 mA cm−2. According to CV, CA, and EIS results, G7/ITO electrode has high electrocatalytic activity, stability, and resistance in comparison with other electrodes.

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“…[18][19][20][21] Y. Suchorski et al demonstrated a long-range effect of metal/ oxide boundaries on the reactivity of Pd in À CO ad oxidation. It has been reported that the oxide support changes the surface properties and electronic structure of the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…It has been reported that the oxide support changes the surface properties and electronic structure of the nanoparticles. [18][19][20][21] Y. Suchorski et al demonstrated a long-range effect of metal/ oxide boundaries on the reactivity of Pd in À CO ad oxidation. [22] Moreover, the reductive annealing of oxide-supported catalysts also promotes the formation of an intermetallic phase, which further enhances the catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

Dimethyl Ether Oxidation on an Active SnO₂/Pt/C Catalyst for High‐Power Fuel Cells

2019

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Dimethyl ether (DME) has been considered a potential fuel for direct-feed proton exchange membrane fuel cells, owing to its high energy density, low toxicity, and low crossover through a Nafion® membrane in comparison to commonly reported fuels such as methanol, ethanol, and formic acid. The main hurdle in the implementation of direct DME fuel cells is the sluggish oxidation kinetics on state-of-the-art PtÀ based catalysts (e. g. Pt and PtRu). In this work, DME oxidation on a platinum-coated tin oxide catalyst (Pt/SnO 2 ) supported on carbon is reported and compared with commercial Pt/C catalysts. Our catalyst was synthesized by using the polyol method, and structural characterization was performed by using transmission electron microscopy and X-ray diffraction. Electrochemical analysis in acid solution showed overpotentials that are 50 mV lower than commercial Pt/C, as well as a higher oxidation current ( 44 mA À 1 Pt ). The peak power obtained using a 4 cm 2 laboratory prototype fuel cell (loading of 1.23 mg Pt cm À 2 on anode at 0.40 V) was 105 mW cm À 2 at 70°C. Online mass spectrometry analysis of the oxidation products gives insights into the new pathways of the electro-oxidation mechanism on this promising catalyst.

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Active sites contribution from nanostructured interface of palladium and cerium oxide with enhanced catalytic performance for alcohols oxidation in alkaline solution

Cited by 52 publications

References 43 publications

Thermal Annealing Effect of Co−N−C/Carbon Nanotube on the Electrochemical Oxygen Reduction Reaction

Thermal Annealing Effect of Co−N−C/Carbon Nanotube on the Electrochemical Oxygen Reduction Reaction

Few‐layer graphene coated on indium tin oxide electrodes prepared by chemical vapor deposition and their enhanced glucose electrooxidation activity

Dimethyl Ether Oxidation on an Active SnO₂/Pt/C Catalyst for High‐Power Fuel Cells

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Active sites contribution from nanostructured interface of palladium and cerium oxide with enhanced catalytic performance for alcohols oxidation in alkaline solution

Cited by 52 publications

References 43 publications

Thermal Annealing Effect of Co−N−C/Carbon Nanotube on the Electrochemical Oxygen Reduction Reaction

Thermal Annealing Effect of Co−N−C/Carbon Nanotube on the Electrochemical Oxygen Reduction Reaction

Few‐layer graphene coated on indium tin oxide electrodes prepared by chemical vapor deposition and their enhanced glucose electrooxidation activity

Dimethyl Ether Oxidation on an Active SnO2/Pt/C Catalyst for High‐Power Fuel Cells

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Product

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Dimethyl Ether Oxidation on an Active SnO₂/Pt/C Catalyst for High‐Power Fuel Cells