The Use of C-MnO2 as Hybrid Precursor Support for a  Pt/C-MnxO1+x Catalyst with Enhanced Activity for the Methanol Oxidation Reaction (MOR)

Monteverde, Alessandro; Osmieri, Luigi; Esfahani, Reza Alipour Moghadam; Zeng, Juqin; Francia, Carlotta; Specchia, Vito

doi:10.3390/catal5031399

Cited by 26 publications

(14 citation statements)

References 53 publications

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“…Pt/C-MnxO1+x [32] and H3PMo12O40-Pt/reduced graphene oxide [33] were found to have better performance than Pt/C and PtRu/C due to the synergetic effects between Pt nanoparticles and hybrid supports. Wu et al synthesized a conductive copolymer based on indole-6-carboxylic acid and 3,4-ethylenedioxythiophene (EDOT) as the support for Pt particles [34].…”

Section: This Special Issuementioning

confidence: 98%

Electrocatalysis in Fuel Cells

Shao

2015

Catalysts

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Section: This Special Issuementioning

confidence: 98%

Electrocatalysis in Fuel Cells

Shao

2015

Catalysts

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“…Decreasing Pt atomic intensity is seen in the results of XRD Pt-Ru/C electrodes. This occurs due to the addition of Ru which indicates interatomic interaction of Ru metal and Pt [10].…”

Section: Results and Discussion Electrode Characterization Using Xrdmentioning

confidence: 99%

“…While the cathodic peaks appear in the area of -0.033 V, the appearance of anodic and cathodic peaks indicates the release and capture of electrons so that redox reactions occur. Shifting the anodic peak to the right shows the amount of energy needed to react [10]. The catalytic activity of Pt-Ru/C electrodes can be determined from the ECSA value.…”

Section: Electrode Testing Using the Cyclic Voltammetry (Cv) Methodsmentioning

confidence: 99%

Performance Test of Membrane Electrode Assembly in DAFC using Mixed Methanol and Ethanol Fuel with Various Volume Comparison

Yulianti

Rohendi

Syarif

et al. 2019

IJFAC

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Direct Alcohol Fuel Cell (DAFC) performance is influenced by electrocatalysis reactions that occur in Membrane Electrode Assembly (MEA). In this study, MEA was made with Pt-Ru/C (anode) and Pt/C (cathode) catalysts. The results of the electrode characterization with XRD showed a carbon peak at 26.63° and Ru at 40.58°. Based on the results of Cyclic Voltammetry (CV) measurements, the Electrochemical Surface Area (ECSA) electrode value is known to be 373.601 cm 2 /mg. Meanwhile, the impedance value is 4.315 Ω and the electric al conductivity value is 6.61x10-4 S/cm. MEA testing using MeOH 3 M fuel produces Open Circuit Voltage (OCV) of 0.650 V. Meanwhile, MEA performance testing uses a mixture of methanol and ethanol 2 M in loading conditions obtained the best mixture of fuel composition is methanol: ethanol = 90:10 with a maximum power density of 4.34 mW/cm 2 and is able to maintain the voltage at 0.649 V under conditions of 6.875 mA/cm 2. The results also showed that the volume of ethanol which was too high resulted in a decrease in cell performance in the fuel mixture caused by the competition of adsorption between competing methanol and ethanol occupying the active site of the catalyst.

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“…Unfortunately, pure graphene is difficult to uniformly anchor catalyst nanoparticles due to its perfect graphitization, low defect level and smooth surface. More importantly, the interaction between metal catalyst and graphene is not strong, which is not good for enhancing the catalytic properties of metal catalysts [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Boron, nitrogen co-doped graphene: a superior electrocatalyst support and enhancing mechanism for methanol electrooxidation

Sun

Han

et al. 2016

Electrochimica Acta

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：Boron, nitrogen co-doped graphene (BNG) is facilely synthesized by the two-step thermal annealing of graphene in the presence of melamine and boric acid, which is served as a novel support to enhance the catalytic properties of noble metal catalysts for the methanol oxidation reaction (MOR). It is revealed that the BNG support has more defect sites due to the co-doping of boron and nitrogen, so that uniformly dispersed Pt nanoparticles with average size of 2.3 nm are anchored on the surface of BNG support. The BNG supported Pt (Pt/BNG) catalyst exhibits excellent activity and improved stability towards the MOR, which is mainly attributed to the synergetic effects of boron and nitrogen co-doping into graphene support. It is revealed that nitrogen and boron co-doping produces more oxygen-containing species, which accelerates the methanol oxidation by the so-called bifunctional mechanism. Moreover, the boron doping weakens the adsorption energy of poisoning intermediates on Pt surface by lowering the d-band center of Pt, facilitating the oxidative removal of poisoning intermediates and methanol oxidation. The boron and nitrogen co-doping of graphene opens up a new strategy for the catalyst performance optimization.

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The Use of C-MnO2 as Hybrid Precursor Support for a Pt/C-MnxO1+x Catalyst with Enhanced Activity for the Methanol Oxidation Reaction (MOR)

Cited by 26 publications

References 53 publications

Electrocatalysis in Fuel Cells

Electrocatalysis in Fuel Cells

Performance Test of Membrane Electrode Assembly in DAFC using Mixed Methanol and Ethanol Fuel with Various Volume Comparison

Boron, nitrogen co-doped graphene: a superior electrocatalyst support and enhancing mechanism for methanol electrooxidation

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