Cobaltporphyrin-adsorbed carbon black: Highly efficient electrocatalysts for oxygen reduction

Makoto Yuasa; Aritomo Yamaguchi; Kenichi Oyaizu; Yosuke Fujito; Mizuki Kitao; Tsuyoshi Sato

doi:10.1002/pat.640

Cobaltporphyrin-adsorbed carbon black: Highly efficient electrocatalysts for oxygen reduction

Makoto Yuasa^*, Aritomo Yamaguchi, Kenichi Oyaizu, Yosuke Fujito, Mizuki Kitao, Tsuyoshi Sato

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

meso-Substituted cobalt porphyrins adsorbed on carbon black were prepared as catalysts for the electroreduction of O₂. The catalyst, which was prepared by using a homogenizer in mixing cobalt tetraethylporphyrin and carbon black, gave rise to electroreduction of O₂ at a remarkably positive potential (E_p = 0.45 V versus saturated calomel electrode (SCE) and showed a high selectively for the four-electron reduction (n=3.8). Electrochemical study and extended X-ray absorption fine structure (EXAFS) analysis revealed that the adsorbed face-to-face dimeric aggregates of cobalt porphyrin molecules were highly efficient catalysts for electroreduction of O₂.

Original language	English
Pages (from-to)	702-705
Number of pages	4
Journal	Polymers for Advanced Technologies
Volume	16
Issue number	9
DOIs	https://doi.org/10.1002/pat.640
Publication status	Published - 2005 Sept
Externally published	Yes

Keywords

Adsorption
Carbon black
Catalysts
Cobaltporphyrin
Electrochemistry

ASJC Scopus subject areas

Polymers and Plastics

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10.1002/pat.640

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title = "Cobaltporphyrin-adsorbed carbon black: Highly efficient electrocatalysts for oxygen reduction",

abstract = "meso-Substituted cobalt porphyrins adsorbed on carbon black were prepared as catalysts for the electroreduction of O2. The catalyst, which was prepared by using a homogenizer in mixing cobalt tetraethylporphyrin and carbon black, gave rise to electroreduction of O2 at a remarkably positive potential (Ep = 0.45 V versus saturated calomel electrode (SCE) and showed a high selectively for the four-electron reduction (n=3.8). Electrochemical study and extended X-ray absorption fine structure (EXAFS) analysis revealed that the adsorbed face-to-face dimeric aggregates of cobalt porphyrin molecules were highly efficient catalysts for electroreduction of O2.",

keywords = "Adsorption, Carbon black, Catalysts, Cobaltporphyrin, Electrochemistry",

author = "Makoto Yuasa and Aritomo Yamaguchi and Kenichi Oyaizu and Yosuke Fujito and Mizuki Kitao and Tsuyoshi Sato",

year = "2005",

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doi = "10.1002/pat.640",

language = "English",

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TY - JOUR

T1 - Cobaltporphyrin-adsorbed carbon black

T2 - Highly efficient electrocatalysts for oxygen reduction

AU - Yuasa, Makoto

AU - Yamaguchi, Aritomo

AU - Oyaizu, Kenichi

AU - Fujito, Yosuke

AU - Kitao, Mizuki

AU - Sato, Tsuyoshi

PY - 2005/9

Y1 - 2005/9

N2 - meso-Substituted cobalt porphyrins adsorbed on carbon black were prepared as catalysts for the electroreduction of O2. The catalyst, which was prepared by using a homogenizer in mixing cobalt tetraethylporphyrin and carbon black, gave rise to electroreduction of O2 at a remarkably positive potential (Ep = 0.45 V versus saturated calomel electrode (SCE) and showed a high selectively for the four-electron reduction (n=3.8). Electrochemical study and extended X-ray absorption fine structure (EXAFS) analysis revealed that the adsorbed face-to-face dimeric aggregates of cobalt porphyrin molecules were highly efficient catalysts for electroreduction of O2.

AB - meso-Substituted cobalt porphyrins adsorbed on carbon black were prepared as catalysts for the electroreduction of O2. The catalyst, which was prepared by using a homogenizer in mixing cobalt tetraethylporphyrin and carbon black, gave rise to electroreduction of O2 at a remarkably positive potential (Ep = 0.45 V versus saturated calomel electrode (SCE) and showed a high selectively for the four-electron reduction (n=3.8). Electrochemical study and extended X-ray absorption fine structure (EXAFS) analysis revealed that the adsorbed face-to-face dimeric aggregates of cobalt porphyrin molecules were highly efficient catalysts for electroreduction of O2.

KW - Adsorption

KW - Carbon black

KW - Catalysts

KW - Cobaltporphyrin

KW - Electrochemistry

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DO - 10.1002/pat.640

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JF - Polymers for Advanced Technologies

IS - 9

ER -

Cobaltporphyrin-adsorbed carbon black: Highly efficient electrocatalysts for oxygen reduction

Abstract

Keywords

ASJC Scopus subject areas

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