Electrochemical performance and H 2S poisoning study of mo-doped ceria (CMO) SOFC anodes

Behzad Mirfakhraei; Viola Birss; Venkataraman Thangadurai; Scott Paulson; Kossi Eyadéma Béré; François Gitzhofer

doi:10.1149/1.3570160

Electrochemical performance and H ₂S poisoning study of mo-doped ceria (CMO) SOFC anodes

Behzad Mirfakhraei^*, Viola Birss, Venkataraman Thangadurai, Scott Paulson, Kossi Eyadéma Béré, François Gitzhofer

^*Corresponding author for this work

School of Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Here we compare the electrochemical properties of a porous 10 mol.% Gd-doped CeO ₂ (GDC) anode with those of the same material, but infiltrated with a new plasma spray synthesized 10 mol.% Mo-doped CeO ₂ nano material (nCMO), all at 600-800°C in H ₂, with and without added 10 ppm H ²S. While both of these anode materials exhibit very good H ₂ oxidation activity, their performance does deteriorate when exposed to H ₂S. However, the nCMO-infiltrated GDC anode is significantly more stable and shows much better sulfur tolerance than the single-phase GDC anode. Furthermore, the response of both anodes is reversible, at least in early exposures, and the original H ₂ oxidation activity is regained fully when H ₂S is removed from the fuel stream. At low temperatures (ca. 500°C), these anode materials, contacted to a gold paste current collector, exhibit a dramatic response to H ₂S, making them of potential use as a H ₂S sensor.

Original language	English
Title of host publication	Solid Oxide Fuel Cells 12, SOFC XII
Pages	1727-1734
Number of pages	8
Edition	2 PART 2
DOIs	https://doi.org/10.1149/1.3570160
Publication status	Published - 2011
Event	12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting - Montreal, QC, Canada Duration: 1 May 2011 → 6 May 2011

Publication series

Name	ECS Transactions
Number	2 PART 2
Volume	35
ISSN (Print)	1938-5862
ISSN (Electronic)	1938-6737

Conference

Conference	12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting
Country/Territory	Canada
City	Montreal, QC
Period	1/05/11 → 6/05/11

Access to Document

10.1149/1.3570160

Cite this

@inproceedings{186012afa6f14e668aa99aa28fb6e548,

title = "Electrochemical performance and H 2S poisoning study of mo-doped ceria (CMO) SOFC anodes",

abstract = "Here we compare the electrochemical properties of a porous 10 mol.% Gd-doped CeO 2 (GDC) anode with those of the same material, but infiltrated with a new plasma spray synthesized 10 mol.% Mo-doped CeO 2 nano material (nCMO), all at 600-800°C in H 2, with and without added 10 ppm H 2S. While both of these anode materials exhibit very good H 2 oxidation activity, their performance does deteriorate when exposed to H 2S. However, the nCMO-infiltrated GDC anode is significantly more stable and shows much better sulfur tolerance than the single-phase GDC anode. Furthermore, the response of both anodes is reversible, at least in early exposures, and the original H 2 oxidation activity is regained fully when H 2S is removed from the fuel stream. At low temperatures (ca. 500°C), these anode materials, contacted to a gold paste current collector, exhibit a dramatic response to H 2S, making them of potential use as a H 2S sensor.",

author = "Behzad Mirfakhraei and Viola Birss and Venkataraman Thangadurai and Scott Paulson and B{\'e}r{\'e}, {Kossi Eyad{\'e}ma} and Fran{\c c}ois Gitzhofer",

year = "2011",

doi = "10.1149/1.3570160",

language = "English",

isbn = "9781607682363",

series = "ECS Transactions",

number = "2 PART 2",

pages = "1727--1734",

booktitle = "Solid Oxide Fuel Cells 12, SOFC XII",

edition = "2 PART 2",

note = "12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting ; Conference date: 01-05-2011 Through 06-05-2011",

}

Mirfakhraei, B, Birss, V, Thangadurai, V, Paulson, S, Béré, KE & Gitzhofer, F 2011, Electrochemical performance and H ₂S poisoning study of mo-doped ceria (CMO) SOFC anodes. in Solid Oxide Fuel Cells 12, SOFC XII. 2 PART 2 edn, ECS Transactions, no. 2 PART 2, vol. 35, pp. 1727-1734, 12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting, Montreal, QC, Canada, 1/05/11. https://doi.org/10.1149/1.3570160

TY - GEN

T1 - Electrochemical performance and H 2S poisoning study of mo-doped ceria (CMO) SOFC anodes

AU - Mirfakhraei, Behzad

AU - Birss, Viola

AU - Thangadurai, Venkataraman

AU - Paulson, Scott

AU - Béré, Kossi Eyadéma

AU - Gitzhofer, François

PY - 2011

Y1 - 2011

N2 - Here we compare the electrochemical properties of a porous 10 mol.% Gd-doped CeO 2 (GDC) anode with those of the same material, but infiltrated with a new plasma spray synthesized 10 mol.% Mo-doped CeO 2 nano material (nCMO), all at 600-800°C in H 2, with and without added 10 ppm H 2S. While both of these anode materials exhibit very good H 2 oxidation activity, their performance does deteriorate when exposed to H 2S. However, the nCMO-infiltrated GDC anode is significantly more stable and shows much better sulfur tolerance than the single-phase GDC anode. Furthermore, the response of both anodes is reversible, at least in early exposures, and the original H 2 oxidation activity is regained fully when H 2S is removed from the fuel stream. At low temperatures (ca. 500°C), these anode materials, contacted to a gold paste current collector, exhibit a dramatic response to H 2S, making them of potential use as a H 2S sensor.

AB - Here we compare the electrochemical properties of a porous 10 mol.% Gd-doped CeO 2 (GDC) anode with those of the same material, but infiltrated with a new plasma spray synthesized 10 mol.% Mo-doped CeO 2 nano material (nCMO), all at 600-800°C in H 2, with and without added 10 ppm H 2S. While both of these anode materials exhibit very good H 2 oxidation activity, their performance does deteriorate when exposed to H 2S. However, the nCMO-infiltrated GDC anode is significantly more stable and shows much better sulfur tolerance than the single-phase GDC anode. Furthermore, the response of both anodes is reversible, at least in early exposures, and the original H 2 oxidation activity is regained fully when H 2S is removed from the fuel stream. At low temperatures (ca. 500°C), these anode materials, contacted to a gold paste current collector, exhibit a dramatic response to H 2S, making them of potential use as a H 2S sensor.

U2 - 10.1149/1.3570160

DO - 10.1149/1.3570160

M3 - Conference contribution

AN - SCOPUS:84856894031

SN - 9781607682363

T3 - ECS Transactions

SP - 1727

EP - 1734

BT - Solid Oxide Fuel Cells 12, SOFC XII

T2 - 12th International Symposium on Solid Oxide Fuel Cells, SOFC-XII - 219th ECS Meeting

Y2 - 1 May 2011 through 6 May 2011

ER -