期刊
JOURNAL OF POWER SOURCES
卷 262, 期 -, 页码 207-212出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2014.03.141
关键词
Fuel cells; Catalyst; SOFC; Lanthanum strontium chromite
资金
- U.S. National Science Foundation [DMR-1210388]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1210388] Funding Source: National Science Foundation
Infiltration is a widely used fabrication method for solid oxide fuel cell (SOFC) composite electrodes. Here we report a study of the structure and electrocatalytic properties of SOFC anodes composed of a layer of lanthanum, strontium chromite (La0.8Sr0.2CrO3, LSCr), both with and without added transition metal dopants, infiltrated into a porous yttria-stabilized zirconia (YSZ) matrix. The structural evolution of the electrode upon reduction and under typical SOFC operating conditions is compared to that reported previously for La0.8Sr0.2Cr0.5Mn0.5O3-YSZ composite anodes. For the transition metal doped materials, a portion of the metal dopants were found to be exsolved from the LSCr lattice upon reduction and to be effective in promoting electro-oxidation of hydrogen. Exsolved cobalt particles were also found to be relatively stable when exposed to hydrocarbon fuels with low activity for the formation of carbon deposits. (C) 2014 Elsevier B.V. All rights reserved.
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