Oxygen Reduction on Supported Platinum/Polythiophene Electrocatalysts

M. T. Giacomini; E. A. Ticianelli; J. McBreen; M. Balasubramanian

doi:10.1149/1.1354610

Oxygen Reduction on Supported Platinum/Polythiophene Electrocatalysts

M. T. Giacomini, E. A. Ticianelli, J. McBreen, M. Balasubramanian

Emerging and Solid-State Batteries

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

61 Scopus citations

Abstract

This work reports the use of polythiophene films as supporting matrix for Pt particles. The polymer film hosts were prepared using a strong acid aqueous solution, impregnated with Pt particles, and then tested for electrocatalytic properties for the oxygen reduction reaction (ORR). Cyclic voltammetry shows that the behavior of polythiophene in 12.5 M H ₂SO ₄ presents a general feature equivalent to that of several other conducting polymers, especially polypyrrole. Features of the UV-visible spectra obtained during the redox process are consistent with the polaron/bipolaron model. Scanning electron microscopy measurements show that a very homogeneous film layer is obtained with the Pt deposited as very line particles. Polarization measurements have shown that the ORR occurs through a mechanism involving four electrons with Tafel slopes of ca. 0.12 V dec ¹for potentials below 0.85 V vs. RHH (reference hydrogen electrode), in agreement with previous results for other types of dispersed Pt electrocatalysts.

Original language	English
Pages (from-to)	A323-A329
Journal	Journal of the Electrochemical Society
Volume	148
Issue number	4
DOIs	https://doi.org/10.1149/1.1354610
State	Published - Apr 2001

Access to Document

10.1149/1.1354610

Cite this

@article{caa388f5e2a440c8985b958fefd6314e,

title = "Oxygen Reduction on Supported Platinum/Polythiophene Electrocatalysts",

abstract = "This work reports the use of polythiophene films as supporting matrix for Pt particles. The polymer film hosts were prepared using a strong acid aqueous solution, impregnated with Pt particles, and then tested for electrocatalytic properties for the oxygen reduction reaction (ORR). Cyclic voltammetry shows that the behavior of polythiophene in 12.5 M H 2SO 4 presents a general feature equivalent to that of several other conducting polymers, especially polypyrrole. Features of the UV-visible spectra obtained during the redox process are consistent with the polaron/bipolaron model. Scanning electron microscopy measurements show that a very homogeneous film layer is obtained with the Pt deposited as very line particles. Polarization measurements have shown that the ORR occurs through a mechanism involving four electrons with Tafel slopes of ca. 0.12 V dec 1for potentials below 0.85 V vs. RHH (reference hydrogen electrode), in agreement with previous results for other types of dispersed Pt electrocatalysts.",

author = "Giacomini, {M. T.} and Ticianelli, {E. A.} and J. McBreen and M. Balasubramanian",

year = "2001",

month = apr,

doi = "10.1149/1.1354610",

language = "English",

volume = "148",

pages = "A323--A329",

journal = "Journal of the Electrochemical Society",

issn = "0013-4651",

publisher = "The Electrochemical Society",

number = "4",

}

TY - JOUR

T1 - Oxygen Reduction on Supported Platinum/Polythiophene Electrocatalysts

AU - Giacomini, M. T.

AU - Ticianelli, E. A.

AU - McBreen, J.

AU - Balasubramanian, M.

PY - 2001/4

Y1 - 2001/4

N2 - This work reports the use of polythiophene films as supporting matrix for Pt particles. The polymer film hosts were prepared using a strong acid aqueous solution, impregnated with Pt particles, and then tested for electrocatalytic properties for the oxygen reduction reaction (ORR). Cyclic voltammetry shows that the behavior of polythiophene in 12.5 M H 2SO 4 presents a general feature equivalent to that of several other conducting polymers, especially polypyrrole. Features of the UV-visible spectra obtained during the redox process are consistent with the polaron/bipolaron model. Scanning electron microscopy measurements show that a very homogeneous film layer is obtained with the Pt deposited as very line particles. Polarization measurements have shown that the ORR occurs through a mechanism involving four electrons with Tafel slopes of ca. 0.12 V dec 1for potentials below 0.85 V vs. RHH (reference hydrogen electrode), in agreement with previous results for other types of dispersed Pt electrocatalysts.

AB - This work reports the use of polythiophene films as supporting matrix for Pt particles. The polymer film hosts were prepared using a strong acid aqueous solution, impregnated with Pt particles, and then tested for electrocatalytic properties for the oxygen reduction reaction (ORR). Cyclic voltammetry shows that the behavior of polythiophene in 12.5 M H 2SO 4 presents a general feature equivalent to that of several other conducting polymers, especially polypyrrole. Features of the UV-visible spectra obtained during the redox process are consistent with the polaron/bipolaron model. Scanning electron microscopy measurements show that a very homogeneous film layer is obtained with the Pt deposited as very line particles. Polarization measurements have shown that the ORR occurs through a mechanism involving four electrons with Tafel slopes of ca. 0.12 V dec 1for potentials below 0.85 V vs. RHH (reference hydrogen electrode), in agreement with previous results for other types of dispersed Pt electrocatalysts.

UR - http://www.scopus.com/inward/record.url?scp=0000640910&partnerID=8YFLogxK

U2 - 10.1149/1.1354610

DO - 10.1149/1.1354610

M3 - Article

AN - SCOPUS:0000640910

SN - 0013-4651

VL - 148

SP - A323-A329

JO - Journal of the Electrochemical Society

JF - Journal of the Electrochemical Society

IS - 4

ER -

Oxygen Reduction on Supported Platinum/Polythiophene Electrocatalysts

Abstract

Access to Document

Other files and links

Fingerprint

Cite this