Suppression of carbon deposition at CeO 2 -modified Ni/YSZ anodes in weakly humidified CH 4 at 850°C

X. J. Chen; K. A. Khor; S. H. Chan

doi:10.1149/1.1843791

Suppression of carbon deposition at CeO ₂ -modified Ni/YSZ anodes in weakly humidified CH ₄ at 850°C

X. J. Chen^*, K. A. Khor, S. H. Chan

^*Corresponding author for this work

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Carbon deposition at Ni/ yttria-stabilized zirconia (YSZ) anodes with and without CeO ₂ modification (with CeO ₂ loading of 4.6 wt % in the anode) was investigated in methane with 3% and 10% H ₂O. The electrochemical performance of the Ni/YSZ anode in methane with 3% H ₂O deteriorated sharply under open-circuit voltage (OCV) conditions, and the anode was completely ruined due to the formation of solid carbon at the anode after exposure to methane under OCV for 2 h at 850°C. The addition of the CeO ₂ is effective in the suppression of carbon deposition at the Ni/YSZ anode. The CeO ₂-modified Ni/YSZ anode developed in the present study was successfully operated in methane with 10% H ₂O at 850°C for 3 h under OCV condition without carbon deposition or electrochemical performance deterioration. These attractive results are attributed to the novel microstructure of the CeO ₂-modified Ni/YSZ anode where the Ni and YSZ particles were homogenously covered with a thin layer of CeO ₂ with size around 100 nm.

Original language	English
Pages (from-to)	A79-A82
Journal	Electrochemical and Solid-State Letters
Volume	8
Issue number	2
DOIs	https://doi.org/10.1149/1.1843791
Publication status	Published - 2005
Externally published	Yes

ASJC Scopus Subject Areas

General Chemical Engineering
General Materials Science
Physical and Theoretical Chemistry
Electrochemistry
Electrical and Electronic Engineering

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title = "Suppression of carbon deposition at CeO 2 -modified Ni/YSZ anodes in weakly humidified CH 4 at 850°C",

abstract = "Carbon deposition at Ni/ yttria-stabilized zirconia (YSZ) anodes with and without CeO 2 modification (with CeO 2 loading of 4.6 wt % in the anode) was investigated in methane with 3% and 10% H 2O. The electrochemical performance of the Ni/YSZ anode in methane with 3% H 2O deteriorated sharply under open-circuit voltage (OCV) conditions, and the anode was completely ruined due to the formation of solid carbon at the anode after exposure to methane under OCV for 2 h at 850°C. The addition of the CeO 2 is effective in the suppression of carbon deposition at the Ni/YSZ anode. The CeO 2-modified Ni/YSZ anode developed in the present study was successfully operated in methane with 10% H 2O at 850°C for 3 h under OCV condition without carbon deposition or electrochemical performance deterioration. These attractive results are attributed to the novel microstructure of the CeO 2-modified Ni/YSZ anode where the Ni and YSZ particles were homogenously covered with a thin layer of CeO 2 with size around 100 nm.",

author = "Chen, {X. J.} and Khor, {K. A.} and Chan, {S. H.}",

year = "2005",

doi = "10.1149/1.1843791",

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journal = "Electrochemical and Solid-State Letters",

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T1 - Suppression of carbon deposition at CeO 2 -modified Ni/YSZ anodes in weakly humidified CH 4 at 850°C

AU - Chen, X. J.

AU - Khor, K. A.

AU - Chan, S. H.

PY - 2005

Y1 - 2005

N2 - Carbon deposition at Ni/ yttria-stabilized zirconia (YSZ) anodes with and without CeO 2 modification (with CeO 2 loading of 4.6 wt % in the anode) was investigated in methane with 3% and 10% H 2O. The electrochemical performance of the Ni/YSZ anode in methane with 3% H 2O deteriorated sharply under open-circuit voltage (OCV) conditions, and the anode was completely ruined due to the formation of solid carbon at the anode after exposure to methane under OCV for 2 h at 850°C. The addition of the CeO 2 is effective in the suppression of carbon deposition at the Ni/YSZ anode. The CeO 2-modified Ni/YSZ anode developed in the present study was successfully operated in methane with 10% H 2O at 850°C for 3 h under OCV condition without carbon deposition or electrochemical performance deterioration. These attractive results are attributed to the novel microstructure of the CeO 2-modified Ni/YSZ anode where the Ni and YSZ particles were homogenously covered with a thin layer of CeO 2 with size around 100 nm.

AB - Carbon deposition at Ni/ yttria-stabilized zirconia (YSZ) anodes with and without CeO 2 modification (with CeO 2 loading of 4.6 wt % in the anode) was investigated in methane with 3% and 10% H 2O. The electrochemical performance of the Ni/YSZ anode in methane with 3% H 2O deteriorated sharply under open-circuit voltage (OCV) conditions, and the anode was completely ruined due to the formation of solid carbon at the anode after exposure to methane under OCV for 2 h at 850°C. The addition of the CeO 2 is effective in the suppression of carbon deposition at the Ni/YSZ anode. The CeO 2-modified Ni/YSZ anode developed in the present study was successfully operated in methane with 10% H 2O at 850°C for 3 h under OCV condition without carbon deposition or electrochemical performance deterioration. These attractive results are attributed to the novel microstructure of the CeO 2-modified Ni/YSZ anode where the Ni and YSZ particles were homogenously covered with a thin layer of CeO 2 with size around 100 nm.

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Suppression of carbon deposition at CeO ₂ -modified Ni/YSZ anodes in weakly humidified CH ₄ at 850°C

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