Direct methane fuel cell with La2Sn2O 7-Ni-Gd0.1Ce0.9O1.95 anode and electrospun La0.6Sr0.4Co0.2Fe 0.8O3-δ-Gd0.1Ce0.9O 1.95 cathode

Jin Goo Lee, Chan Min Lee, Myunggeun Park, Yong Gun Shul

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

La2Sn2O7 nano-powder is synthesized by co-precipitation method. La0.6Sr0.4Co0.2Fe 0.8O3-δ (LSCF) and Gd0.1Ce 0.9O1.95 (GDC) composite fibers are fabricated by electrospinning. Scanning electron microscopy (SEM) images show highly increased triple phase boundary (TPB) sites and pores in the electrospun cathode. The interfacial resistance of the electrospun cathode is reduced by 0.2 Ω cm2 compared to the conventional cathode at 650°C. When dry methane fuel is fed to the anode, the reduction rate of the power density of the La2Sn2O7-Ni-GDC anode-supported cell significantly decreases compared to that of the Ni-GDC anode-supported cell at 650°C. The anode resistance in the low frequency range (∼3 Hz) associated with methane conversion shows a remarkable difference between the La2Sn2O7-Ni-GDC and Ni-GDC anode. Temperature-programmed reduction (TPR) analysis reveals the La 2Sn2O7 catalyst is effective for the methane oxidation reaction at 650°C. The Fuel cell in this study manifests a maximum power density of 1.02 W cm-2 and 0.94 W cm-2 at 650°C in hydrogen and dry methane atmosphere, respectively. Also, no carbon deposition existed on the La2Sn2O7-Ni-GDC anode after operating.

Original languageEnglish
Pages (from-to)11816-11822
Number of pages7
JournalRSC Advances
Volume3
Issue number29
DOIs
Publication statusPublished - 2013 Aug 7

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Methane
Fuel cells
Anodes
Cathodes
Electrospinning
Phase boundaries
Coprecipitation
Powders
Hydrogen
Carbon
Oxidation
Scanning electron microscopy
Catalysts
Fibers
Composite materials

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

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title = "Direct methane fuel cell with La2Sn2O 7-Ni-Gd0.1Ce0.9O1.95 anode and electrospun La0.6Sr0.4Co0.2Fe 0.8O3-δ-Gd0.1Ce0.9O 1.95 cathode",
abstract = "La2Sn2O7 nano-powder is synthesized by co-precipitation method. La0.6Sr0.4Co0.2Fe 0.8O3-δ (LSCF) and Gd0.1Ce 0.9O1.95 (GDC) composite fibers are fabricated by electrospinning. Scanning electron microscopy (SEM) images show highly increased triple phase boundary (TPB) sites and pores in the electrospun cathode. The interfacial resistance of the electrospun cathode is reduced by 0.2 Ω cm2 compared to the conventional cathode at 650°C. When dry methane fuel is fed to the anode, the reduction rate of the power density of the La2Sn2O7-Ni-GDC anode-supported cell significantly decreases compared to that of the Ni-GDC anode-supported cell at 650°C. The anode resistance in the low frequency range (∼3 Hz) associated with methane conversion shows a remarkable difference between the La2Sn2O7-Ni-GDC and Ni-GDC anode. Temperature-programmed reduction (TPR) analysis reveals the La 2Sn2O7 catalyst is effective for the methane oxidation reaction at 650°C. The Fuel cell in this study manifests a maximum power density of 1.02 W cm-2 and 0.94 W cm-2 at 650°C in hydrogen and dry methane atmosphere, respectively. Also, no carbon deposition existed on the La2Sn2O7-Ni-GDC anode after operating.",
author = "Lee, {Jin Goo} and Lee, {Chan Min} and Myunggeun Park and Shul, {Yong Gun}",
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Direct methane fuel cell with La2Sn2O 7-Ni-Gd0.1Ce0.9O1.95 anode and electrospun La0.6Sr0.4Co0.2Fe 0.8O3-δ-Gd0.1Ce0.9O 1.95 cathode. / Lee, Jin Goo; Lee, Chan Min; Park, Myunggeun; Shul, Yong Gun.

In: RSC Advances, Vol. 3, No. 29, 07.08.2013, p. 11816-11822.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Direct methane fuel cell with La2Sn2O 7-Ni-Gd0.1Ce0.9O1.95 anode and electrospun La0.6Sr0.4Co0.2Fe 0.8O3-δ-Gd0.1Ce0.9O 1.95 cathode

AU - Lee, Jin Goo

AU - Lee, Chan Min

AU - Park, Myunggeun

AU - Shul, Yong Gun

PY - 2013/8/7

Y1 - 2013/8/7

N2 - La2Sn2O7 nano-powder is synthesized by co-precipitation method. La0.6Sr0.4Co0.2Fe 0.8O3-δ (LSCF) and Gd0.1Ce 0.9O1.95 (GDC) composite fibers are fabricated by electrospinning. Scanning electron microscopy (SEM) images show highly increased triple phase boundary (TPB) sites and pores in the electrospun cathode. The interfacial resistance of the electrospun cathode is reduced by 0.2 Ω cm2 compared to the conventional cathode at 650°C. When dry methane fuel is fed to the anode, the reduction rate of the power density of the La2Sn2O7-Ni-GDC anode-supported cell significantly decreases compared to that of the Ni-GDC anode-supported cell at 650°C. The anode resistance in the low frequency range (∼3 Hz) associated with methane conversion shows a remarkable difference between the La2Sn2O7-Ni-GDC and Ni-GDC anode. Temperature-programmed reduction (TPR) analysis reveals the La 2Sn2O7 catalyst is effective for the methane oxidation reaction at 650°C. The Fuel cell in this study manifests a maximum power density of 1.02 W cm-2 and 0.94 W cm-2 at 650°C in hydrogen and dry methane atmosphere, respectively. Also, no carbon deposition existed on the La2Sn2O7-Ni-GDC anode after operating.

AB - La2Sn2O7 nano-powder is synthesized by co-precipitation method. La0.6Sr0.4Co0.2Fe 0.8O3-δ (LSCF) and Gd0.1Ce 0.9O1.95 (GDC) composite fibers are fabricated by electrospinning. Scanning electron microscopy (SEM) images show highly increased triple phase boundary (TPB) sites and pores in the electrospun cathode. The interfacial resistance of the electrospun cathode is reduced by 0.2 Ω cm2 compared to the conventional cathode at 650°C. When dry methane fuel is fed to the anode, the reduction rate of the power density of the La2Sn2O7-Ni-GDC anode-supported cell significantly decreases compared to that of the Ni-GDC anode-supported cell at 650°C. The anode resistance in the low frequency range (∼3 Hz) associated with methane conversion shows a remarkable difference between the La2Sn2O7-Ni-GDC and Ni-GDC anode. Temperature-programmed reduction (TPR) analysis reveals the La 2Sn2O7 catalyst is effective for the methane oxidation reaction at 650°C. The Fuel cell in this study manifests a maximum power density of 1.02 W cm-2 and 0.94 W cm-2 at 650°C in hydrogen and dry methane atmosphere, respectively. Also, no carbon deposition existed on the La2Sn2O7-Ni-GDC anode after operating.

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