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Liu, Meilin
Liu Research Group
Research Interests
  • Fuel Cells
  • Batteries
  • Supercapacitors
  • Sensors

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Enhanced Sulfur and Coking Tolerance of a Mixed Ion Conductor for SOFCs: BaZr0.1Ce0.7Y0.2-xYbxO3-delta

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Title
Enhanced Sulfur and Coking Tolerance of a Mixed Ion Conductor for SOFCs: BaZr0.1Ce0.7Y0.2-xYbxO3-delta
Author
Yang, L.Wang, SBlinn, K.Liu, MeilinLiu, Z.Cheng, Z.
Keywords
OXIDE FUEL-CELL; LOW-TEMPERATURE SOFCS; ANODE; WATER; HYDROCARBONS; OPERATION; OXIDATION; BACEO3
Issue Date
2009-10
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Citation
SCIENCE, v.326, no.5949, pp.126 - 129
Abstract
The anode materials that have been developed for solid oxide fuel cells (SOFCs) are vulnerable to deactivation by carbon buildup (coking) from hydrocarbon fuels or by sulfur contamination (poisoning). We report on a mixed ion conductor, BaZr0.1Ce0.7Y0.2-xYbxO3-delta, that allows rapid transport of both protons and oxide ion vacancies. It exhibits high ionic conductivity at relatively low temperatures (500 degrees to 700 degrees C). Its ability to resist deactivation by sulfur and coking appears linked to the mixed conductor's enhanced catalytic activity for sulfur oxidation and hydrocarbon cracking and reforming, as well as enhanced water adsorption capability.
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DOI
10.1126/science.1174811
ISSN
0036-8075
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ECHE_Journal Papers
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