Oxygen reduction catalysts for polymer electrolyte fuel cells from the pyrolysis of FeII acetate adsorbed on 3,4,9,10-perylenetetracarboxylic dianhydride

Faubert, G; Côté, R.; Dodelet, J. P.; Lefèvre, Michel; Bertrand, Patrick

doi:10.1016/s0013-4686(98)00382-x

Cited by 210 publications

(191 citation statements)

References 42 publications

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“…Thus, the adsorption bond strengths may be used to make predictions of reversible potentials. As Figure 3 shows the fully optimized geometry for the 14-ring C 41 NH 16 sheet radical in the absence of an adsorbate and in the doublet state. It has a C 2V symmetry along the C a -N axis and is flat with no more than (0.001 Å variations from planarity.…”

Section: Theoretical Methodsmentioning

confidence: 99%

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O₂ Reduction on Graphite and Nitrogen-Doped Graphite: Experiment and Theory

Sidik¹,

Anderson²,

Subramanian³

et al. 2006

J. Phys. Chem. B

607

488

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An experimental and theoretical study of electroreduction of oxygen to hydrogen peroxide is presented. The experimental measurements of nitrided Ketjenblack indicated an onset potential for reduction of approximately 0.5 V (SHE) compared to the onset potential of 0.2 V observed for untreated carbon. Quantum calculations on cluster models of nitrided and un-nitrided graphite sheets show that carbon radical sites formed adjacent to substitutional N in graphite are active for O 2 electroreduction to H 2 O 2 via and adsorbed OOH intermediate. The weak catalytic effect of untreated carbon is attributed to weaker bonding of OOH to the H atom-terminated graphite edges. Substitutional N atoms that are far from graphite sheet edges will be active, and those that are close to the edges will be less active. Interference from electrochemical reduction of H atoms on the reactive sites is considered, and it is shown that in the potential range of H 2 O 2 formation the reactive sites are not blocked by adsorbed H atoms.

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Section: Theoretical Methodsmentioning

confidence: 99%

“…To understand better the effect of the substitutional N on the adsorption bond strength of H and OOH radicals, we calculated adsorption bond strengths for sites a-d on the undoped graphite sheet, C 42 H 16 . The results are shown in Figure 9.…”

Section: Theoretical Methodsmentioning

confidence: 99%

O₂ Reduction on Graphite and Nitrogen-Doped Graphite: Experiment and Theory

Sidik¹,

Anderson²,

Subramanian³

et al. 2006

J. Phys. Chem. B

607

488

View full text Add to dashboard Cite

show abstract

“…In 1989, Gupta et al showed that the combination of metal acetate with polyacrylonitrile and carbon black leads to the formation of active materials when pyrolysed at temperatures >600 • C [3]. Main efforts to find suitable nitrogen and metal precursors were made by Dodelet's group and others [4][5][6][7]. These early approaches were strongly limited in the density of active sites, as the carbon black always displays a relative mass in the final catalyst that is not contributing in terms of active sites [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Influence of the Structure-Forming Agent on the Performance of Fe-N-C Catalysts

et al. 2018

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Abstract:In this work, the influence of the structure-forming agent on the composition, morphology and oxygen reduction reaction (ORR) activity of Fe-N-C catalysts was investigated. As structure-forming agents (SFAs), dicyandiamide (DCDA) (nitrogen source) or oxalic acid (oxygen source) or mixtures thereof were used. For characterization, cyclic voltammetry and rotating disc electrode (RDE) experiments were performed in 0.1 M H 2 SO 4 . In addition to this, N 2 sorption measurements and Raman spectroscopy were performed for the structural, and elemental analysis for chemical characterization. The role of metal, nitrogen and carbon sources within the synthesis of Fe-N-C catalysts has been pointed out before. Here, we show that the optimum in terms of ORR activity is achieved if both N-and O-containing SFAs are used in almost similar fractions. All catalysts display a redox couple, where its position depends on the fractions of SFAs. The SFA has also a strong impact on the morphology: Catalysts that were prepared with a larger fraction of N-containing SFA revealed a higher order in graphitization, indicated by bands in the 2nd order range of the Raman spectra. Nevertheless, the optimum in terms of ORR activity is obtained for the catalyst with highest D/G band ratio. Therefore, the results indicate that the presence of an additional oxygen-containing SFA is beneficial within the preparation.

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“…During the last several decades of research into non-noble metal catalysts, heat-treated Fe-and Co-based nitrogen complexes, including porphyrins, phthalocyanines, dibenzotetraazaanulenes, phenanthrolines, polypyrrole, tripyridyl triazine, and so on have been recognized as the most promising candidates for catalyzing the ORR in an acidic medium [3][4][5][6][7][8][9]. It has been found that iron-based complexes can normally catalyze the ORR through a 4-electron reduction pathway to produce water, while cobalt complexes can catalyze a 2-electron reduction pathway [10].I n addition, iron-based catalysts have higher ORR activity than Cobased catalysts but the latter have higher catalytic stability.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of carbon-supported binary FeCo–N non-noble metal electrocatalysts for the oxygen reduction reaction

Kim

Pan

et al. 2010

Electrochimica Acta

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This article appeared in a journal published by Elsevier. The attached copy is furnished to the author for internal non-commercial research and education use, including for instruction at the authors institution and sharing with colleagues.Other uses, including reproduction and distribution, or selling or licensing copies, or posting to personal, institutional or third party websites are prohibited.In most cases authors are permitted to post their version of the article (e.g. in Word or Tex form) to their personal website or institutional repository. Authors requiring further information regarding Elsevier's archiving and manuscript policies are encouraged to visit:

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Oxygen reduction catalysts for polymer electrolyte fuel cells from the pyrolysis of FeII acetate adsorbed on 3,4,9,10-perylenetetracarboxylic dianhydride

Cited by 210 publications

References 42 publications

O₂ Reduction on Graphite and Nitrogen-Doped Graphite: Experiment and Theory

O₂ Reduction on Graphite and Nitrogen-Doped Graphite: Experiment and Theory

Influence of the Structure-Forming Agent on the Performance of Fe-N-C Catalysts

Synthesis of carbon-supported binary FeCo–N non-noble metal electrocatalysts for the oxygen reduction reaction

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Oxygen reduction catalysts for polymer electrolyte fuel cells from the pyrolysis of FeII acetate adsorbed on 3,4,9,10-perylenetetracarboxylic dianhydride

Cited by 210 publications

References 42 publications

O2 Reduction on Graphite and Nitrogen-Doped Graphite: Experiment and Theory

O2 Reduction on Graphite and Nitrogen-Doped Graphite: Experiment and Theory

Influence of the Structure-Forming Agent on the Performance of Fe-N-C Catalysts

Synthesis of carbon-supported binary FeCo–N non-noble metal electrocatalysts for the oxygen reduction reaction

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Product

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O₂ Reduction on Graphite and Nitrogen-Doped Graphite: Experiment and Theory

O₂ Reduction on Graphite and Nitrogen-Doped Graphite: Experiment and Theory