Reduction of hydrogen peroxide production at anode of proton exchange membrane fuel cell under open-circuit conditions using ruthenium-carbon catalyst

Un Ho Jung, Seong Uk Jeong, Kook Chun, Ki Tae Park, Hyang Mee Lee, Dong Woong Choi, Sung Hyun Kim

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This study examines the effect of hydrogen peroxide (H2O2) on the open-circuit voltage (OCV) of a proton exchange membrane fuel cell (PEMFC) and the reduction of H2O2 in the membrane using a ruthenium/carbon catalyst (Ru/C) at the anode. Each cathode and anode potential of the PEMFC in the presence of H2O2 is examined by constructing a half-cell using 1.0 M H2SO4 solution as an electrolyte and Ag/AgCl as the reference electrode. H2O2 is added to the H2SO4 solution and the half-cell potential is measured at each H2O2 concentration. The cathode potential is affected by the H2O2 concentration while the anode potential remains stable. A Ru catalyst is used to reduce the level of H2O2 formation through O2 cross-over at the interface of a membrane and the anode. The Ru catalyst is known to produce less H2O2 through oxygen reduction at the anode of PEMFC than a Pt catalyst. A Ru/C layer is placed between the Nafion® 112 membrane and anode catalyst layer and the cell voltage under open-circuit condition is measured. A single cell is constructed to compare the OCV of the Pt/C only anode with that of the Ru/C-layered anode. The level of hydrogen cross-over and the OCV are determined after operation at a current density of 1 A cm-2 for 10 h and stabilization at open-circuit for 1 h to obtain an equilibrium state in the cell. Although there is an increase in the OCV of the cell with the Ru/C layer at the anode, excessive addition of Ru/C has an adverse effect on cell performance.

Original languageEnglish
Pages (from-to)281-285
Number of pages5
JournalJournal of Power Sources
Volume170
Issue number2
DOIs
Publication statusPublished - 2007 Jul 10

Fingerprint

Ruthenium
Proton exchange membrane fuel cells (PEMFC)
hydrogen peroxide
Hydrogen peroxide
Hydrogen Peroxide
ruthenium
fuel cells
Anodes
anodes
Carbon
membranes
catalysts
Catalysts
protons
Networks (circuits)
carbon
Open circuit voltage
open circuit voltage
cells
Membranes

Keywords

  • Hydrogen peroxide
  • Open-circuit voltage
  • Oxygen cross-over
  • Proton exchange membrane fuel cell
  • Ruthenium/carbon catalyst

ASJC Scopus subject areas

  • Electrochemistry
  • Fuel Technology
  • Materials Chemistry
  • Energy (miscellaneous)

Cite this

Reduction of hydrogen peroxide production at anode of proton exchange membrane fuel cell under open-circuit conditions using ruthenium-carbon catalyst. / Jung, Un Ho; Jeong, Seong Uk; Chun, Kook; Park, Ki Tae; Lee, Hyang Mee; Choi, Dong Woong; Kim, Sung Hyun.

In: Journal of Power Sources, Vol. 170, No. 2, 10.07.2007, p. 281-285.

Research output: Contribution to journalArticle

Jung, Un Ho ; Jeong, Seong Uk ; Chun, Kook ; Park, Ki Tae ; Lee, Hyang Mee ; Choi, Dong Woong ; Kim, Sung Hyun. / Reduction of hydrogen peroxide production at anode of proton exchange membrane fuel cell under open-circuit conditions using ruthenium-carbon catalyst. In: Journal of Power Sources. 2007 ; Vol. 170, No. 2. pp. 281-285.
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AU - Jung, Un Ho

AU - Jeong, Seong Uk

AU - Chun, Kook

AU - Park, Ki Tae

AU - Lee, Hyang Mee

AU - Choi, Dong Woong

AU - Kim, Sung Hyun

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N2 - This study examines the effect of hydrogen peroxide (H2O2) on the open-circuit voltage (OCV) of a proton exchange membrane fuel cell (PEMFC) and the reduction of H2O2 in the membrane using a ruthenium/carbon catalyst (Ru/C) at the anode. Each cathode and anode potential of the PEMFC in the presence of H2O2 is examined by constructing a half-cell using 1.0 M H2SO4 solution as an electrolyte and Ag/AgCl as the reference electrode. H2O2 is added to the H2SO4 solution and the half-cell potential is measured at each H2O2 concentration. The cathode potential is affected by the H2O2 concentration while the anode potential remains stable. A Ru catalyst is used to reduce the level of H2O2 formation through O2 cross-over at the interface of a membrane and the anode. The Ru catalyst is known to produce less H2O2 through oxygen reduction at the anode of PEMFC than a Pt catalyst. A Ru/C layer is placed between the Nafion® 112 membrane and anode catalyst layer and the cell voltage under open-circuit condition is measured. A single cell is constructed to compare the OCV of the Pt/C only anode with that of the Ru/C-layered anode. The level of hydrogen cross-over and the OCV are determined after operation at a current density of 1 A cm-2 for 10 h and stabilization at open-circuit for 1 h to obtain an equilibrium state in the cell. Although there is an increase in the OCV of the cell with the Ru/C layer at the anode, excessive addition of Ru/C has an adverse effect on cell performance.

AB - This study examines the effect of hydrogen peroxide (H2O2) on the open-circuit voltage (OCV) of a proton exchange membrane fuel cell (PEMFC) and the reduction of H2O2 in the membrane using a ruthenium/carbon catalyst (Ru/C) at the anode. Each cathode and anode potential of the PEMFC in the presence of H2O2 is examined by constructing a half-cell using 1.0 M H2SO4 solution as an electrolyte and Ag/AgCl as the reference electrode. H2O2 is added to the H2SO4 solution and the half-cell potential is measured at each H2O2 concentration. The cathode potential is affected by the H2O2 concentration while the anode potential remains stable. A Ru catalyst is used to reduce the level of H2O2 formation through O2 cross-over at the interface of a membrane and the anode. The Ru catalyst is known to produce less H2O2 through oxygen reduction at the anode of PEMFC than a Pt catalyst. A Ru/C layer is placed between the Nafion® 112 membrane and anode catalyst layer and the cell voltage under open-circuit condition is measured. A single cell is constructed to compare the OCV of the Pt/C only anode with that of the Ru/C-layered anode. The level of hydrogen cross-over and the OCV are determined after operation at a current density of 1 A cm-2 for 10 h and stabilization at open-circuit for 1 h to obtain an equilibrium state in the cell. Although there is an increase in the OCV of the cell with the Ru/C layer at the anode, excessive addition of Ru/C has an adverse effect on cell performance.

KW - Hydrogen peroxide

KW - Open-circuit voltage

KW - Oxygen cross-over

KW - Proton exchange membrane fuel cell

KW - Ruthenium/carbon catalyst

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