Physical, chemical and electrochemical characterization of heat-treated tetracarboxylic cobalt phthalocyanine adsorbed on carbon black as electrocatalyst for oxygen reduction in polymer electrolyte fuel cells

Lalande, G.; Côté, R.; TamizhMani, GovindaSamy; Guay, Daniel; Dodelet, J. P.; Dignard‐Bailey, L.; Weng, Lt.; Bertrand, Patrick

doi:10.1016/0013-4686(95)00104-m

Cited by 181 publications

(107 citation statements)

References 33 publications

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“…It was identified as a positive cluster CNCu 2 . Similar clusters (CNCo 2 þ ) were observed in the SIMS spectra of PcCo powders [20]. The presence of CNCu þ ions is not so evident as there are other peaks in this region (see Fig.…”

Section: The Sims Analysis Of the Surfacesupporting

confidence: 58%

“…3a). All ions of the basic elements composing the molecular formula of the parent compound, i.e., H, C, N, Cu are readily detected (Table 2), as well as common metallic impurities such as Na, K, Al, Ca, which SIMS is very sensitive to [20]. Oxygen ions are inevitably present in all spectra.…”

Section: The Sims Analysis Of the Surfacementioning

confidence: 99%

“…As shown elsewhere [20,22,26], positive mass and SIMS spectra of metal phthalocyanines usually exhibit peaks corresponding to variously charged molecular ion, detached metal, secondary and quaternary molecular fragments 1/2Pc and 1/4Pc, and ions formed by the loss of the nitrile group. With the exception of clusters containing metal atoms, which are clearly distinguishable by isotopic distribution, all these ions have even mass numbers, when singly charged.…”

Section: The Sims Analysis Of the Surfacementioning

confidence: 99%

“…Rearrangement of fragments may occur during sputtering and ionization, which complicates identification of the spectral features, too. A cautious attempt to assign the most prominent SIMS peaks is made below based on comparison with the literature data on SIMS and mass spectra of PcM [13,[19][20][21][22][23].…”

Section: The Sims Analysis Of the Surfacementioning

confidence: 99%

See 3 more Smart Citations

Plasma irradiation effects in phthalocyanine films

Pakhomov

Дроздов

Vostokov

2004

Applied Surface Science

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Section: The Sims Analysis Of the Surfacesupporting

confidence: 58%

Section: The Sims Analysis Of the Surfacementioning

confidence: 99%

Section: The Sims Analysis Of the Surfacementioning

confidence: 99%

Section: The Sims Analysis Of the Surfacementioning

confidence: 99%

See 2 more Smart Citations

Plasma irradiation effects in phthalocyanine films

Pakhomov

Дроздов

Vostokov

2004

Applied Surface Science

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“…Currently, two types of structures are widely considered as the active site. One is TM-N 4 or TM-N x structure; [5][6][7][8][9][10] the other is C-N structure, which is formed by replacing carbon atoms with nitrogen atoms in graphene matrix of carbon black. [11][12][13][14] Some carbon atoms in graphene matrix of carbon black can be replaced by nitrogen atoms during TM-N/C catalyst preparation to form several types of C-N structures.…”

Section: Introductionmentioning

confidence: 99%

Study on the Relationship Between Catalytic Activity and C-N Structures of a Nitrogen-contained Non-precious Metal Catalyst for Oxygen Reduction Reaction

Xiong

Chen

2015

Electrochemistry

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A non-precious metal catalyst (CoMe/C) for oxygen reduction reaction was prepared by a simple procedure using acetylene black, melamine and cobalt chloride as raw materials. The relationship between catalytic activity and C-N structures of CoMe/C was investigated by X-ray photoelectron spectroscopy. Results show that the nitrogen atom exists as Co-N, pyrrolic C-N and pyridinic C-N structures in the CoMe/C catalyst. The Co-N structure has no activity to oxygen reduction reaction. Both pyrrolic and pyridinic C-N structures are the active sites of CoMe/C. The pyrrolic C-N structure is unstable than the pyridinic C-N structure in H 2 SO 4 solution. In heat treating process, the Co(II) ion is reduced to metallic β-cobalt which facilitates the formation of pyrrolic and pyridinic C-N structures to ensure the better activity of CoMe/C catalyst.

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The Mechanism of Dioxygen Reduction at Iron meso-Tetrakis (Pyridyl) Porphyrin: a Spectroelectrochemical Study

Popovici

Leyffer

Holze

1998

J. Porphyrins Phthalocyanines

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The mechanism of the dioxygen interaction with and reduction reaction at iron α,β,γ,δ-tetra(4-pyridyl) porphyrin ( FeTPyP ) deposited on carbon and silver supporting electrodes was investigated with cyclic voltammetry and FTIR, UV-vis and resonance Raman spectroscopies. Results indicate a strong influence of the ligand upon the reduction electrocatalysis. Spectroelectrochemical results support a two-electron pathway resulting most probably in hydrogen peroxide as the primary reduction product.

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Physical, chemical and electrochemical characterization of heat-treated tetracarboxylic cobalt phthalocyanine adsorbed on carbon black as electrocatalyst for oxygen reduction in polymer electrolyte fuel cells

Cited by 181 publications

References 33 publications

Plasma irradiation effects in phthalocyanine films

Plasma irradiation effects in phthalocyanine films

Study on the Relationship Between Catalytic Activity and C-N Structures of a Nitrogen-contained Non-precious Metal Catalyst for Oxygen Reduction Reaction

The Mechanism of Dioxygen Reduction at Iron meso-Tetrakis (Pyridyl) Porphyrin: a Spectroelectrochemical Study

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