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Article Dans Une Revue ECS Transactions Année : 2017

Corrugated electrode/electrolyte iInterfaces in SOFC : theoretical and experimental development

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Anthony Chesnaud
Francesco Delloro
André-Pierre Abellard
  • Fonction : Auteur
  • PersonId : 939611
J. Ouyang
  • Fonction : Auteur
D. Li
  • Fonction : Auteur
T. Shi
  • Fonction : Auteur
B. Chi
  • Fonction : Auteur
R. Ihringer
  • Fonction : Auteur
M. Cassir

Résumé

The present work proposes to explore how the presence of a periodic pattern at electrode/electrolyte interfaces of a SOFC could impact the electrochemical performances, from theoretical and experimental points of view. The model results demonstrate that a patterned interfaces along with an electrolyte having a thickness smaller than the dimensions of the pattern, lead to a strong increase of the exchange surface, hence to the exchange currents (up to 64%) with respect to flat interfaces. With the use of laboratory standard ceramic processes, this architecturation was experimented on YSZ-Ni self supported anodes on top of which a thin YSZ electrolyte was deposited. The first electrical tests for such a cell with a non-optimized thickness show an increase of the current density with respect to a cell with flat interfaces, from 130 to 300 mA cm-2 at 0.7 V, that is even higher than anticipated by the modeling.
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Dates et versions

hal-01821589 , version 1 (22-06-2018)

Identifiants

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Anthony Chesnaud, Francesco Delloro, Maya Geagea, André-Pierre Abellard, J. Ouyang, et al.. Corrugated electrode/electrolyte iInterfaces in SOFC : theoretical and experimental development. ECS Transactions, 2017, 78, pp.1851-1863. ⟨10.1149/07801.1851ecst⟩. ⟨hal-01821589⟩
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