Nucleation of nanometer-scale electrocatalyst particles in solid oxide fuel cell anodes

B. D. Madsen; W. Kobsiriphat; Y. Wang; Laurence Marks; S. A. Barnett

doi:10.1016/j.jpowsour.2006.12.080

Nucleation of nanometer-scale electrocatalyst particles in solid oxide fuel cell anodes

B. D. Madsen, W. Kobsiriphat, Y. Wang, Laurence Marks, S. A. Barnett^*

^*Corresponding author for this work

Materials Science and Engineering

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

168 Scopus citations

Abstract

This letter describes a method for forming Ru nanoclusters on oxide anode surfaces during the initial stages of solid oxide fuel cell operation, yielding improved anode performance without additional processing steps. Transmission electron microscope and X-ray photoelectron spectroscopy observations showed that Ru nanoclusters precipitated onto La_0.8Sr_0.2Cr_0.82Ru_0.18O_3-δ surfaces after exposure to hydrogen at 800 °C, with Ru cluster size stabilizing at ≤5 nm for the longest times tested, ∼300 h. Solid oxide fuel cell tests were done in humidified hydrogen at 800 °C with La_0.8Sr_0.2Cr_0.82Ru_0.18O_3-δ-GDC (GDC = Gd-doped ceria) anodes on LSGM electrolyte-supported cells. Cell power density increased over the first ∼50 h of cell operation from ∼200 to 400 mW cm^-2 due to an anode polarization resistance decrease from ∼0.6 to <0.2 Ω cm².

Original language	English (US)
Pages (from-to)	64-67
Number of pages	4
Journal	Journal of Power Sources
Volume	166
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2006.12.080
State	Published - Mar 30 2007

Funding

The authors acknowledge impedance spectroscopy measurements by Yuanbo Lin on LSCF–GDC cathodes on LSGM. This material is based upon work supported by the Department of Energy under Award Number DE-FG02-05ER46255.

Keywords

Catalyst
Lanthanum chromite
Nanoparticle
Ruthenium
Solid oxide fuel cell

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2006.12.080

Cite this

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title = "Nucleation of nanometer-scale electrocatalyst particles in solid oxide fuel cell anodes",

abstract = "This letter describes a method for forming Ru nanoclusters on oxide anode surfaces during the initial stages of solid oxide fuel cell operation, yielding improved anode performance without additional processing steps. Transmission electron microscope and X-ray photoelectron spectroscopy observations showed that Ru nanoclusters precipitated onto La0.8Sr0.2Cr0.82Ru0.18O3-δ surfaces after exposure to hydrogen at 800 °C, with Ru cluster size stabilizing at ≤5 nm for the longest times tested, ∼300 h. Solid oxide fuel cell tests were done in humidified hydrogen at 800 °C with La0.8Sr0.2Cr0.82Ru0.18O3-δ-GDC (GDC = Gd-doped ceria) anodes on LSGM electrolyte-supported cells. Cell power density increased over the first ∼50 h of cell operation from ∼200 to 400 mW cm-2 due to an anode polarization resistance decrease from ∼0.6 to <0.2 Ω cm2.",

keywords = "Catalyst, Lanthanum chromite, Nanoparticle, Ruthenium, Solid oxide fuel cell",

author = "Madsen, {B. D.} and W. Kobsiriphat and Y. Wang and Laurence Marks and Barnett, {S. A.}",

note = "Funding Information: The authors acknowledge impedance spectroscopy measurements by Yuanbo Lin on LSCF–GDC cathodes on LSGM. This material is based upon work supported by the Department of Energy under Award Number DE-FG02-05ER46255.",

year = "2007",

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doi = "10.1016/j.jpowsour.2006.12.080",

language = "English (US)",

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AU - Madsen, B. D.

AU - Kobsiriphat, W.

AU - Wang, Y.

AU - Marks, Laurence

AU - Barnett, S. A.

N1 - Funding Information: The authors acknowledge impedance spectroscopy measurements by Yuanbo Lin on LSCF–GDC cathodes on LSGM. This material is based upon work supported by the Department of Energy under Award Number DE-FG02-05ER46255.

PY - 2007/3/30

Y1 - 2007/3/30

N2 - This letter describes a method for forming Ru nanoclusters on oxide anode surfaces during the initial stages of solid oxide fuel cell operation, yielding improved anode performance without additional processing steps. Transmission electron microscope and X-ray photoelectron spectroscopy observations showed that Ru nanoclusters precipitated onto La0.8Sr0.2Cr0.82Ru0.18O3-δ surfaces after exposure to hydrogen at 800 °C, with Ru cluster size stabilizing at ≤5 nm for the longest times tested, ∼300 h. Solid oxide fuel cell tests were done in humidified hydrogen at 800 °C with La0.8Sr0.2Cr0.82Ru0.18O3-δ-GDC (GDC = Gd-doped ceria) anodes on LSGM electrolyte-supported cells. Cell power density increased over the first ∼50 h of cell operation from ∼200 to 400 mW cm-2 due to an anode polarization resistance decrease from ∼0.6 to <0.2 Ω cm2.

AB - This letter describes a method for forming Ru nanoclusters on oxide anode surfaces during the initial stages of solid oxide fuel cell operation, yielding improved anode performance without additional processing steps. Transmission electron microscope and X-ray photoelectron spectroscopy observations showed that Ru nanoclusters precipitated onto La0.8Sr0.2Cr0.82Ru0.18O3-δ surfaces after exposure to hydrogen at 800 °C, with Ru cluster size stabilizing at ≤5 nm for the longest times tested, ∼300 h. Solid oxide fuel cell tests were done in humidified hydrogen at 800 °C with La0.8Sr0.2Cr0.82Ru0.18O3-δ-GDC (GDC = Gd-doped ceria) anodes on LSGM electrolyte-supported cells. Cell power density increased over the first ∼50 h of cell operation from ∼200 to 400 mW cm-2 due to an anode polarization resistance decrease from ∼0.6 to <0.2 Ω cm2.

KW - Catalyst

KW - Lanthanum chromite

KW - Nanoparticle

KW - Ruthenium

KW - Solid oxide fuel cell

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Nucleation of nanometer-scale electrocatalyst particles in solid oxide fuel cell anodes

Abstract

Funding

Keywords

ASJC Scopus subject areas

UN SDGs

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