Optimization of carbon-supported polypyrrole complex as cathode catalyst for fuel cells

Kenichi Oyaizu; Ken Tanaka; Makoto Yuasa

Optimization of carbon-supported polypyrrole complex as cathode catalyst for fuel cells

Kenichi Oyaizu^*, Ken Tanaka, Makoto Yuasa

^*Corresponding author for this work

Research output: Contribution to conference › Paper › peer-review

Abstract

Carbon particles coated with metal complexes were prepared as cathode catalyst for fuel cells. The metal complex composed of metal ions such as cobalt(II), iron(II), and nickel(II) ions, and nitrogen-containing conductive polymers such as polypyrrole as polymeric ligands. The catalysts were prepared by electropolymerization of corresponding monomers onto the surface of carbon particles such as carbon black which was dispersed in the electrolyte solution containing the monomers, followed by complexation using metal acetates and related salts. Rotating ring-disk voltammetry experiments revealed that the complex composed of a mixture of cobalt and palladium ions as central ions and polypyrrole as the ligand served as a highly efficient electrocatalyst for the selective four-electron reduction of oxygen at E_1/2 ≈ 0.5 V vs SCE, without the formation of partially reduced oxygen species such as H ₂O₂.

Original language	English
Pages	4547-4548
Number of pages	2
Publication status	Published - 2005 Dec 1
Externally published	Yes
Event	54th SPSJ Symposium on Macromolecules - Yamagata, Japan Duration: 2005 Sept 20 → 2005 Sept 22

Other

Other	54th SPSJ Symposium on Macromolecules
Country/Territory	Japan
City	Yamagata
Period	05/9/20 → 05/9/22

Keywords

Cathode catalyst
Four-electron transfer
Fuel cell
Metal complex
Oxygen reduction
Polypyrrole

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "Optimization of carbon-supported polypyrrole complex as cathode catalyst for fuel cells",

abstract = "Carbon particles coated with metal complexes were prepared as cathode catalyst for fuel cells. The metal complex composed of metal ions such as cobalt(II), iron(II), and nickel(II) ions, and nitrogen-containing conductive polymers such as polypyrrole as polymeric ligands. The catalysts were prepared by electropolymerization of corresponding monomers onto the surface of carbon particles such as carbon black which was dispersed in the electrolyte solution containing the monomers, followed by complexation using metal acetates and related salts. Rotating ring-disk voltammetry experiments revealed that the complex composed of a mixture of cobalt and palladium ions as central ions and polypyrrole as the ligand served as a highly efficient electrocatalyst for the selective four-electron reduction of oxygen at E1/2 ≈ 0.5 V vs SCE, without the formation of partially reduced oxygen species such as H 2O2.",

keywords = "Cathode catalyst, Four-electron transfer, Fuel cell, Metal complex, Oxygen reduction, Polypyrrole",

author = "Kenichi Oyaizu and Ken Tanaka and Makoto Yuasa",

year = "2005",

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language = "English",

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note = "54th SPSJ Symposium on Macromolecules ; Conference date: 20-09-2005 Through 22-09-2005",

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TY - CONF

T1 - Optimization of carbon-supported polypyrrole complex as cathode catalyst for fuel cells

AU - Oyaizu, Kenichi

AU - Tanaka, Ken

AU - Yuasa, Makoto

PY - 2005/12/1

Y1 - 2005/12/1

N2 - Carbon particles coated with metal complexes were prepared as cathode catalyst for fuel cells. The metal complex composed of metal ions such as cobalt(II), iron(II), and nickel(II) ions, and nitrogen-containing conductive polymers such as polypyrrole as polymeric ligands. The catalysts were prepared by electropolymerization of corresponding monomers onto the surface of carbon particles such as carbon black which was dispersed in the electrolyte solution containing the monomers, followed by complexation using metal acetates and related salts. Rotating ring-disk voltammetry experiments revealed that the complex composed of a mixture of cobalt and palladium ions as central ions and polypyrrole as the ligand served as a highly efficient electrocatalyst for the selective four-electron reduction of oxygen at E1/2 ≈ 0.5 V vs SCE, without the formation of partially reduced oxygen species such as H 2O2.

AB - Carbon particles coated with metal complexes were prepared as cathode catalyst for fuel cells. The metal complex composed of metal ions such as cobalt(II), iron(II), and nickel(II) ions, and nitrogen-containing conductive polymers such as polypyrrole as polymeric ligands. The catalysts were prepared by electropolymerization of corresponding monomers onto the surface of carbon particles such as carbon black which was dispersed in the electrolyte solution containing the monomers, followed by complexation using metal acetates and related salts. Rotating ring-disk voltammetry experiments revealed that the complex composed of a mixture of cobalt and palladium ions as central ions and polypyrrole as the ligand served as a highly efficient electrocatalyst for the selective four-electron reduction of oxygen at E1/2 ≈ 0.5 V vs SCE, without the formation of partially reduced oxygen species such as H 2O2.

KW - Cathode catalyst

KW - Four-electron transfer

KW - Fuel cell

KW - Metal complex

KW - Oxygen reduction

KW - Polypyrrole

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T2 - 54th SPSJ Symposium on Macromolecules

Y2 - 20 September 2005 through 22 September 2005

ER -

Optimization of carbon-supported polypyrrole complex as cathode catalyst for fuel cells

Abstract

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Keywords

ASJC Scopus subject areas

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