Enhancing sulfur tolerance of a Ni-YSZ anode through BaZr 0.1Ce0.7Y0.1Yb0.1O 3?δ infiltration
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- Enhancing sulfur tolerance of a Ni-YSZ anode through BaZr 0.1Ce0.7Y0.1Yb0.1O 3?δ infiltration
- Sengodan, Sivaprakash; Liu, Mingfei; Lim, Tak-Hyoung; Shin, Jeeyoung; Liu, Meilin; Kim, Guntae
- OXIDE FUEL-CELLS; SOFC ANODE; H2S; BEHAVIOR; COKING
- Issue Date
- ELECTROCHEMICAL SOC INC
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.161, no.5, pp.F668 - F673
- In this study, sulfur tolerance of a conventional Ni-yttria stabilized zirconia (Ni-YSZ) anode for solid oxide fuel cells is significantly improved by surface modification. The Ni-YSZ anode modified by the infiltration of BaZr 0.1Ce0.7Y0.1Yb0.1O 3?δ (BZCYYb) demonstrates stable performance in a sulfur-containing H2 fuel over 500 hours. In contrast, the bare Ni-YSZ anode without surface modification degrades drastically when exposed to the sulfur-containing H2 fuel. This implies that the BZCYYb coating is an excellent catalyst for surface modification of the conventional Ni-YSZ anode. A single step infiltration of BZCYYb into the Ni-YSZ anode was sufficient to provide good sulfur tolerance.
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