Estimation of specific interaction between several Co porphyrins and carbon black: its influence on the electrocatalytic O2 reduction by the porphyrins

Yamazaki, Shinichi; Yamada, Yusuke; Ioroi, Tsutomu; Fujiwara, Naoko; Siroma, Zyun; Yasuda, Kazuaki; Miyazaki, Yoshinori

doi:10.1016/j.jelechem.2004.10.022

Cited by 91 publications

(67 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Briefly, carbon-supported [Rh(oep)] was prepared as described in the literature. [7,22,23] Carbon-supported [Rh(oep)] or carbonsupported platinum (40 %, Johnson-Matthey Co. Ltd.) was used as the anode catalyst. Throughout the experiments, carbon-supported platinum (40 %, Johnson-Matthey Co. ltd.) was used as the cathode catalyst.…”

Section: Methodsmentioning

confidence: 99%

A Direct CO Polymer Electrolyte Membrane Fuel Cell

et al. 2006

Self Cite

View full text Add to dashboard Cite

A good source of energy: The reformation of hydrocarbons generates CO as well as H2. Despite its high reducing activity, CO is not suitable as a fuel in polymer electrolyte membrane fuel cells (PEMFCs) because it is a strong poison for the Pt catalyst used as the anode. A new fuel cell has now been developed with a rhodium octaethylporphyrin ([Rh(oep)]) anode catalyst that uses neat CO as a fuel, and delivers high performance (see graph).

show abstract

Section: Methodsmentioning

confidence: 99%

A Direct CO Polymer Electrolyte Membrane Fuel Cell

et al. 2006

Self Cite

View full text Add to dashboard Cite

show abstract

“…All this indicates that the ORR activity is entirely determined by the catalytically active sites formed by pyrolysis of the attached metallophthalocyanines on the surface of MWCNTs. However, there are visible differences in catalytic activity between MnPc/MWCNT and CuPc/MWCNT catalysts, which could be explained by the difference in the central metal atom of metallophthalocyanine and existence of better π-π interactions between metallophthalocyanine and MWCNTs [65]. The interaction of MnPc/MWCNT with oxygen is more favourable compared to that of CuPc/MWCNT because the energy differences of the central metal d-orbitals.…”

Section: Rotating Disk Electrode Studies Of O 2 Reductionmentioning

confidence: 99%

Electrocatalysis of oxygen reduction on multi-walled carbon nanotube supported copper and manganese phthalocyanines in alkaline media

Kaare

Kruusenberg

Merisalu

et al. 2015

J Solid State Electrochem

View full text Add to dashboard Cite

Manganese phthalocyanine (MnPc) and copper phthalocyanine (CuPc)-modified electrodes were prepared using multi-walled carbon nanotubes (MWCNTs) as a support material. The catalyst materials were heat treated at four different temperatures to investigate the effect of pyrolysis on the oxygen reduction reaction (ORR) activity of these electrocatalysts. The MWCNT to metal phthalocyanine ratio was varied. Scanning electron microscopy (SEM) was employed to visualise the surface morphology of the electrodes and the x-ray photoelectron spectroscopic (XPS) study was carried out to analyse the surface composition of the most active catalyst materials. The ORR was studied in 0.1 M KOH solution employing the rotating disk electrode (RDE) method. Glassy carbon (GC) electrodes were modified with carbon nanotube-supported metal phthalocyanine catalysts using Tokuyama AS-4 ionomer. The RDE results revealed that the highest electrocatalytic activity for ORR was achieved upon heat treatment at 800°C. CuPc-derived catalyst demonstrated lower catalytic activity as compared to the MnPc-derived counterpart, which is in good agreement with previous literature, whereas the activity of MnPc-based catalyst was higher than that reported earlier.

show abstract

“…All of these factors may contribute to the variability of quantitative characteristics. The effect of the supporting surface on the catalytic properties of Co porphyrins has been studied [Hutchison et al, 1997;Yamazaki et al, 2005]. Nonetheless, valuable generalizations can still be inferred from the literature data: † Electrocatalytic reduction of both O 2 and H 2 O 2 starts at potentials close to that of the Fe III/II couple in the absence of a substrate (which for most porphyrins is about 0.2-0 V with respect to a normal hydrogen electrode (NHE) at pH 6; the exception being Fe(TMPyP), E % 0.5 V).…”

Section: Simple Fe Porphyrinsmentioning

confidence: 99%

Metalloporphyrin Catalysts of Oxygen Reduction

Boulatov

2008

Fuel Cell Catalysis

View full text Add to dashboard Cite

Estimation of specific interaction between several Co porphyrins and carbon black: its influence on the electrocatalytic O2 reduction by the porphyrins

Cited by 91 publications

References 32 publications

A Direct CO Polymer Electrolyte Membrane Fuel Cell

A Direct CO Polymer Electrolyte Membrane Fuel Cell

Electrocatalysis of oxygen reduction on multi-walled carbon nanotube supported copper and manganese phthalocyanines in alkaline media

Metalloporphyrin Catalysts of Oxygen Reduction

Contact Info

Product

Resources

About