Pd-substituted (La,Sr)CrO3-δ-Ce0.9Gd 0.1O2-δ solid oxide fuel cell anodes exhibiting regenerative behavior

David M. Bierschenk, Elizabeth Potter-Nelson, Cathleen Hoel, Yougui Liao, Laurence Marks, Kenneth R Poeppelmeier, Scott A. Barnett

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Composite anodes consisting of Pd-substituted (La,Sr)CrO 3-δ mixed with 50 wt% Ce0.9Gd0.1O 2-δ were tested in La0.9Sr0.1Ga 0.8Mg0.2O3-δ-electrolyte supported fuel cells at 800 °C with humidified H2 fuel. Low anode polarization resistance was observed during the first several hours of operation, explained by the nucleation of Pd nano-particles on perovskite particle surfaces. Anode performance then degraded gradually before stabilizing. Redox cycling repeatedly restored the anodes to their initial peak performance, followed again by degradation. This regenerative behavior was explained by the observation that the Pd nano-particles were removed by oxidation, and then re-nucleated upon reduction.

Original languageEnglish
Pages (from-to)3089-3094
Number of pages6
JournalJournal of Power Sources
Volume196
Issue number6
DOIs
Publication statusPublished - Mar 15 2011

Fingerprint

cell anodes
solid oxide fuel cells
Solid oxide fuel cells (SOFC)
Anodes
anodes
Perovskite
Electrolytes
fuel cells
Fuel cells
Nucleation
nucleation
electrolytes
Polarization
degradation
Degradation
Oxidation
oxidation
cycles
composite materials
Composite materials

Keywords

  • Catalyst
  • Oxide anode
  • Palladium
  • Perovskite
  • SOFC

ASJC Scopus subject areas

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

Cite this

Pd-substituted (La,Sr)CrO3-δ-Ce0.9Gd 0.1O2-δ solid oxide fuel cell anodes exhibiting regenerative behavior. / Bierschenk, David M.; Potter-Nelson, Elizabeth; Hoel, Cathleen; Liao, Yougui; Marks, Laurence; Poeppelmeier, Kenneth R; Barnett, Scott A.

In: Journal of Power Sources, Vol. 196, No. 6, 15.03.2011, p. 3089-3094.

Research output: Contribution to journalArticle

Bierschenk, David M. ; Potter-Nelson, Elizabeth ; Hoel, Cathleen ; Liao, Yougui ; Marks, Laurence ; Poeppelmeier, Kenneth R ; Barnett, Scott A. / Pd-substituted (La,Sr)CrO3-δ-Ce0.9Gd 0.1O2-δ solid oxide fuel cell anodes exhibiting regenerative behavior. In: Journal of Power Sources. 2011 ; Vol. 196, No. 6. pp. 3089-3094.
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AU - Barnett, Scott A.

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