Journal
SOLID STATE IONICS
Volume 249, Issue -, Pages 26-33Publisher
ELSEVIER
DOI: 10.1016/j.ssi.2013.07.007
Keywords
Infiltration; Lanthanum gallate; Oxide anode catalyst; Scaffold type anode; Solid oxide fuel cell
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Funding
- Global Frontier R&D Program on Center for Multiscale Energy System [2011-0031569]
- Fundamental R&D Program for Core Technology of Materials
- Ministry of Knowledge Economy, Republic of Korea
- Technology Innovation Project of the Small and Medium Business Administration of the Korean government.
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The phase stability and electrochemical properties of infiltrated anode catalysts on porous La0.8Sr0.2Ga0.5Mg0.2O3-delta (LSGM) scaffold are investigated for possible applications as anode materials for an intermediate temperature-operating solid oxide fuel cell (IT-SOFC). To avoid the formation of secondary phases between the anode and the LSGM electrolyte, an infiltration method is proposed on the porous LSGM scaffold. No secondary phases between the infiltrated La0.75Sr0.25Cr0.5Mn0.5O3 (LSCM) catalyst and the LSGM are observed at 900 degrees C. However, LaSrGa3O7, LaSrGaO4 and other unknown secondary phases are formed above the calcination temperature of 1000 degrees C when LSCM was infiltrated on porous LSGM scaffolds. The current (I)-voltage (V) characteristics are measured in an LSGM electrolyte single cell with a Ba0.5Sr0.5Co0.2 Fe0.8O3-delta (BSCF) cathode and LSCM infiltrated into the LSGM scaffold type anode. The maximum power density of the single cell is 0.214 W cm(-2) at 800 degrees C. 2013 Elsevier B.V. All rights reserved.
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