Combining Transition Metals – An Approach towards High-Performing Coking Tolerant Solid Oxide Fuel Cell Anodes

D. B. Drasbæk, M. L. Traulsen, B. R. Sudireddy, P. Holtappels*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Bimetallic combinations of the three transition metals, Ni, Co, and Fe, were infiltrated alongside gadolinium doped ceria (CGO), into a strontium titanate backbone. The infiltrated cells were analyzed using electrochemical impedance spectroscopy in the temperature range 650°-850°C and in the atmospheres: 4% H2O/H2, 50% H2O/H2, 80% H2O/H2, and 50% CO2/CO. In addition, in situ synchronous Raman spectroscopy and EIS experiments were performed to explore the coking tolerance of the bimetallic infiltrations. The electrocatalytic activity of the bimetals were similar to the single metals with electrode area specific resistances 0.35 Ωcm2, 0.28 Ωcm2, and 1.32 of Ωcm2 for the Co-Fe-CGO, Ni-Co-CGO, and Ni-Fe-CGO infiltrated cells, respectively, at 750oC in 50% H2O/H2. The results obtained from the synchronous in situ Raman - EIS experiments further indicates an improved coking resistance for combined transition metal infiltrations.
Original languageEnglish
JournalECS Transactions
Volume91
Issue number1
Pages (from-to)1953-1961
ISSN1938-5862
DOIs
Publication statusPublished - 2019

Cite this

@article{7fb1ae2da3e349829803ad450d61fb22,
title = "Combining Transition Metals – An Approach towards High-Performing Coking Tolerant Solid Oxide Fuel Cell Anodes",
abstract = "Bimetallic combinations of the three transition metals, Ni, Co, and Fe, were infiltrated alongside gadolinium doped ceria (CGO), into a strontium titanate backbone. The infiltrated cells were analyzed using electrochemical impedance spectroscopy in the temperature range 650°-850°C and in the atmospheres: 4{\%} H2O/H2, 50{\%} H2O/H2, 80{\%} H2O/H2, and 50{\%} CO2/CO. In addition, in situ synchronous Raman spectroscopy and EIS experiments were performed to explore the coking tolerance of the bimetallic infiltrations. The electrocatalytic activity of the bimetals were similar to the single metals with electrode area specific resistances 0.35 Ωcm2, 0.28 Ωcm2, and 1.32 of Ωcm2 for the Co-Fe-CGO, Ni-Co-CGO, and Ni-Fe-CGO infiltrated cells, respectively, at 750oC in 50{\%} H2O/H2. The results obtained from the synchronous in situ Raman - EIS experiments further indicates an improved coking resistance for combined transition metal infiltrations.",
author = "Drasb{\ae}k, {D. B.} and Traulsen, {M. L.} and Sudireddy, {B. R.} and P. Holtappels",
year = "2019",
doi = "10.1149/09101.1953ecst",
language = "English",
volume = "91",
pages = "1953--1961",
journal = "E C S Transactions",
issn = "1938-5862",
publisher = "The Electrochemical Society",
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}

Combining Transition Metals – An Approach towards High-Performing Coking Tolerant Solid Oxide Fuel Cell Anodes. / Drasbæk, D. B.; Traulsen, M. L.; Sudireddy, B. R.; Holtappels, P.

In: ECS Transactions, Vol. 91, No. 1, 2019, p. 1953-1961.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Combining Transition Metals – An Approach towards High-Performing Coking Tolerant Solid Oxide Fuel Cell Anodes

AU - Drasbæk, D. B.

AU - Traulsen, M. L.

AU - Sudireddy, B. R.

AU - Holtappels, P.

PY - 2019

Y1 - 2019

N2 - Bimetallic combinations of the three transition metals, Ni, Co, and Fe, were infiltrated alongside gadolinium doped ceria (CGO), into a strontium titanate backbone. The infiltrated cells were analyzed using electrochemical impedance spectroscopy in the temperature range 650°-850°C and in the atmospheres: 4% H2O/H2, 50% H2O/H2, 80% H2O/H2, and 50% CO2/CO. In addition, in situ synchronous Raman spectroscopy and EIS experiments were performed to explore the coking tolerance of the bimetallic infiltrations. The electrocatalytic activity of the bimetals were similar to the single metals with electrode area specific resistances 0.35 Ωcm2, 0.28 Ωcm2, and 1.32 of Ωcm2 for the Co-Fe-CGO, Ni-Co-CGO, and Ni-Fe-CGO infiltrated cells, respectively, at 750oC in 50% H2O/H2. The results obtained from the synchronous in situ Raman - EIS experiments further indicates an improved coking resistance for combined transition metal infiltrations.

AB - Bimetallic combinations of the three transition metals, Ni, Co, and Fe, were infiltrated alongside gadolinium doped ceria (CGO), into a strontium titanate backbone. The infiltrated cells were analyzed using electrochemical impedance spectroscopy in the temperature range 650°-850°C and in the atmospheres: 4% H2O/H2, 50% H2O/H2, 80% H2O/H2, and 50% CO2/CO. In addition, in situ synchronous Raman spectroscopy and EIS experiments were performed to explore the coking tolerance of the bimetallic infiltrations. The electrocatalytic activity of the bimetals were similar to the single metals with electrode area specific resistances 0.35 Ωcm2, 0.28 Ωcm2, and 1.32 of Ωcm2 for the Co-Fe-CGO, Ni-Co-CGO, and Ni-Fe-CGO infiltrated cells, respectively, at 750oC in 50% H2O/H2. The results obtained from the synchronous in situ Raman - EIS experiments further indicates an improved coking resistance for combined transition metal infiltrations.

U2 - 10.1149/09101.1953ecst

DO - 10.1149/09101.1953ecst

M3 - Journal article

VL - 91

SP - 1953

EP - 1961

JO - E C S Transactions

JF - E C S Transactions

SN - 1938-5862

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ER -