Non-platinum oxygen reduction electrocatalysts based on carbon-supported metal-polythiophene composites

Su Jung Han; Hyun Jung Jung; Jun Ho Shim; Hyun Chul Kim; Shi Joon Sung; Bong Yoo; Dong Ha Lee; Chongmok Lee; Youngmi Lee

doi:10.1016/j.jelechem.2011.02.012

Non-platinum oxygen reduction electrocatalysts based on carbon-supported metal-polythiophene composites

Su Jung Han, Hyun Jung Jung, Jun Ho Shim, Hyun Chul Kim, Shi Joon Sung, Bong Yoo, Dong Ha Lee, Chongmok Lee, Youngmi Lee

Department of Chemistry & Nanoscience

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

18 Scopus citations

Abstract

A series of carbon-supported metal-polythiophene composite (M-PTh/C) electrocatalysts are synthesized based on seven different non-Pt metals (M = Ir, Ru, Pd, Co, Fe, Ni, Sn) using chemical polymerization method. The electrocatalytic activity toward the oxygen reduction reaction (ORR) is characterized in acidic condition using rotating disk electrode voltammetry. Ir-, Ru-, and Pd-PTh/C show far more positive (ca. 700 mV) ORR onset potentials than Co-, Fe-, Ni-, and Sn-PTh/C. Further studies on the ORR kinetics are carried out for the three superior catalysts, Ir-, Ru-, Pd-PTh/C, using Koutecky-Levich and Tafel plots. The number of electrons (n) transferred in the ORR is ∼4 for these three catalysts, suggesting 4-electron transfer ORR is dominant. Considering all the obtained factors (such as the onset potential, n value, and exchange current density), Ir- and Ru-PTh/C catalysts are concluded to have relatively excellent ORR catalytic activity.

Original language	English
Pages (from-to)	39-44
Number of pages	6
Journal	Journal of Electroanalytical Chemistry
Volume	655
Issue number	1
DOIs	https://doi.org/10.1016/j.jelechem.2011.02.012
State	Published - 15 May 2011

Bibliographical note

Funding Information:
This research was carried out under the General R/D Program of the Daegu Gyeongbuk Institute of Science & Technology (DGIST), funded by Ministry of Education, Science and Technology (MEST) of the Republic of Korea.

Keywords

Electrocatalyst
Metal-polymer composite
Oxygen reduction reaction
Polythiophene

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10.1016/j.jelechem.2011.02.012

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title = "Non-platinum oxygen reduction electrocatalysts based on carbon-supported metal-polythiophene composites",

abstract = "A series of carbon-supported metal-polythiophene composite (M-PTh/C) electrocatalysts are synthesized based on seven different non-Pt metals (M = Ir, Ru, Pd, Co, Fe, Ni, Sn) using chemical polymerization method. The electrocatalytic activity toward the oxygen reduction reaction (ORR) is characterized in acidic condition using rotating disk electrode voltammetry. Ir-, Ru-, and Pd-PTh/C show far more positive (ca. 700 mV) ORR onset potentials than Co-, Fe-, Ni-, and Sn-PTh/C. Further studies on the ORR kinetics are carried out for the three superior catalysts, Ir-, Ru-, Pd-PTh/C, using Koutecky-Levich and Tafel plots. The number of electrons (n) transferred in the ORR is ∼4 for these three catalysts, suggesting 4-electron transfer ORR is dominant. Considering all the obtained factors (such as the onset potential, n value, and exchange current density), Ir- and Ru-PTh/C catalysts are concluded to have relatively excellent ORR catalytic activity.",

keywords = "Electrocatalyst, Metal-polymer composite, Oxygen reduction reaction, Polythiophene",

author = "Han, {Su Jung} and Jung, {Hyun Jung} and Shim, {Jun Ho} and Kim, {Hyun Chul} and Sung, {Shi Joon} and Bong Yoo and Lee, {Dong Ha} and Chongmok Lee and Youngmi Lee",

note = "Funding Information: This research was carried out under the General R/D Program of the Daegu Gyeongbuk Institute of Science & Technology (DGIST), funded by Ministry of Education, Science and Technology (MEST) of the Republic of Korea.",

year = "2011",

month = may,

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doi = "10.1016/j.jelechem.2011.02.012",

language = "English",

volume = "655",

pages = "39--44",

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T1 - Non-platinum oxygen reduction electrocatalysts based on carbon-supported metal-polythiophene composites

AU - Han, Su Jung

AU - Jung, Hyun Jung

AU - Shim, Jun Ho

AU - Kim, Hyun Chul

AU - Sung, Shi Joon

AU - Yoo, Bong

AU - Lee, Dong Ha

AU - Lee, Chongmok

AU - Lee, Youngmi

N1 - Funding Information: This research was carried out under the General R/D Program of the Daegu Gyeongbuk Institute of Science & Technology (DGIST), funded by Ministry of Education, Science and Technology (MEST) of the Republic of Korea.

PY - 2011/5/15

Y1 - 2011/5/15

N2 - A series of carbon-supported metal-polythiophene composite (M-PTh/C) electrocatalysts are synthesized based on seven different non-Pt metals (M = Ir, Ru, Pd, Co, Fe, Ni, Sn) using chemical polymerization method. The electrocatalytic activity toward the oxygen reduction reaction (ORR) is characterized in acidic condition using rotating disk electrode voltammetry. Ir-, Ru-, and Pd-PTh/C show far more positive (ca. 700 mV) ORR onset potentials than Co-, Fe-, Ni-, and Sn-PTh/C. Further studies on the ORR kinetics are carried out for the three superior catalysts, Ir-, Ru-, Pd-PTh/C, using Koutecky-Levich and Tafel plots. The number of electrons (n) transferred in the ORR is ∼4 for these three catalysts, suggesting 4-electron transfer ORR is dominant. Considering all the obtained factors (such as the onset potential, n value, and exchange current density), Ir- and Ru-PTh/C catalysts are concluded to have relatively excellent ORR catalytic activity.

AB - A series of carbon-supported metal-polythiophene composite (M-PTh/C) electrocatalysts are synthesized based on seven different non-Pt metals (M = Ir, Ru, Pd, Co, Fe, Ni, Sn) using chemical polymerization method. The electrocatalytic activity toward the oxygen reduction reaction (ORR) is characterized in acidic condition using rotating disk electrode voltammetry. Ir-, Ru-, and Pd-PTh/C show far more positive (ca. 700 mV) ORR onset potentials than Co-, Fe-, Ni-, and Sn-PTh/C. Further studies on the ORR kinetics are carried out for the three superior catalysts, Ir-, Ru-, Pd-PTh/C, using Koutecky-Levich and Tafel plots. The number of electrons (n) transferred in the ORR is ∼4 for these three catalysts, suggesting 4-electron transfer ORR is dominant. Considering all the obtained factors (such as the onset potential, n value, and exchange current density), Ir- and Ru-PTh/C catalysts are concluded to have relatively excellent ORR catalytic activity.

KW - Electrocatalyst

KW - Metal-polymer composite

KW - Oxygen reduction reaction

KW - Polythiophene

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DO - 10.1016/j.jelechem.2011.02.012

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Non-platinum oxygen reduction electrocatalysts based on carbon-supported metal-polythiophene composites

Abstract

Bibliographical note

Keywords

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