Improvement of the electrochemical properties of novel solid oxide fuel cell anodes, La0.75Sr0.25Cr0.5Mn0.5O3−δ and La4Sr8Ti11Mn0.5Ga0.5O37.5−δ, using Cu–YSZ-based cermets

P Núñez; JC Ruiz-Morales; J Canales-Vázquez; D Marrero-López; John Thomas Sirr Irvine

doi:10.1016/j.electacta.2007.05.060

Improvement of the electrochemical properties of novel solid oxide fuel cell anodes, La_0.75Sr_0.25Cr_0.5Mn_0.5O₃₋_δ and La₄Sr₈Ti₁₁Mn_0.5Ga_0.5O_37.5−_δ, using Cu–YSZ-based cermets

P Núñez, JC Ruiz-Morales, J Canales-Vázquez, D Marrero-López, John Thomas Sirr Irvine

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

Abstract

A Cu-metal-based cermet was used to improve the electrochemical properties of two novel oxide-based systems with intrinsic low electronic conductivity such as La0.75Sr0.25Cr0.5Mn0.5O3-delta (LSCM) and La4Sr8Ti11Mn0.5Ga0.5O37.5-delta (LSTMG). The introduction of Cu results in a marked improvement of the polarisation resistance values and hence in the performance. The best results correspond to the addition of similar to 15% of CuO. In both systems, the polarisation resistances were improved by a least a factor of 2. Despite there are reports claiming that the CuO-zirconia-based systems exhibit catalytic activity, such an improvement seems to be mainly related to the capability of CuO as a sintering agent, helping to bridge electrode particles together, creating new electronic paths and thus effectively increasing the triple phase boundary through the whole electrode material. (C) 2007 Published by Elsevier Ltd.

Original language	English
Pages (from-to)	7217-7225
Number of pages	9
Journal	Electrochimica Acta
Volume	52
DOIs	https://doi.org/10.1016/j.electacta.2007.05.060
Publication status	Published - Sept 2007

Keywords

LSCM
LSTMG
anode
solid oxide fuel cell
polarisation
13-WEEK INHALATION EXPOSURE
SUPPORTED COPPER-CATALYSTS
METHANOL SYNTHESIS
ZIRCONIA MORPHOLOGY
OXYGEN VACANCY
H-2 OXIDATION
PART I
TEMPERATURE
CO
ELECTRODE

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title = "Improvement of the electrochemical properties of novel solid oxide fuel cell anodes, La0.75Sr0.25Cr0.5Mn0.5O3−δ and La4Sr8Ti11Mn0.5Ga0.5O37.5−δ, using Cu–YSZ-based cermets",

abstract = "A Cu-metal-based cermet was used to improve the electrochemical properties of two novel oxide-based systems with intrinsic low electronic conductivity such as La0.75Sr0.25Cr0.5Mn0.5O3-delta (LSCM) and La4Sr8Ti11Mn0.5Ga0.5O37.5-delta (LSTMG). The introduction of Cu results in a marked improvement of the polarisation resistance values and hence in the performance. The best results correspond to the addition of similar to 15% of CuO. In both systems, the polarisation resistances were improved by a least a factor of 2. Despite there are reports claiming that the CuO-zirconia-based systems exhibit catalytic activity, such an improvement seems to be mainly related to the capability of CuO as a sintering agent, helping to bridge electrode particles together, creating new electronic paths and thus effectively increasing the triple phase boundary through the whole electrode material. (C) 2007 Published by Elsevier Ltd.",

keywords = "LSCM, LSTMG, anode, solid oxide fuel cell, polarisation, 13-WEEK INHALATION EXPOSURE, SUPPORTED COPPER-CATALYSTS, METHANOL SYNTHESIS, ZIRCONIA MORPHOLOGY, OXYGEN VACANCY, H-2 OXIDATION, PART I, TEMPERATURE, CO, ELECTRODE",

author = "P N{\'u}{\~n}ez and JC Ruiz-Morales and J Canales-V{\'a}zquez and D Marrero-L{\'o}pez and Irvine, {John Thomas Sirr}",

year = "2007",

month = sep,

doi = "10.1016/j.electacta.2007.05.060",

language = "English",

volume = "52",

pages = "7217--7225",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "PERGAMON-ELSEVIER SCIENCE LTD",

}

TY - JOUR

T1 - Improvement of the electrochemical properties of novel solid oxide fuel cell anodes, La0.75Sr0.25Cr0.5Mn0.5O3−δ and La4Sr8Ti11Mn0.5Ga0.5O37.5−δ, using Cu–YSZ-based cermets

AU - Núñez, P

AU - Ruiz-Morales, JC

AU - Canales-Vázquez, J

AU - Marrero-López, D

AU - Irvine, John Thomas Sirr

PY - 2007/9

Y1 - 2007/9

N2 - A Cu-metal-based cermet was used to improve the electrochemical properties of two novel oxide-based systems with intrinsic low electronic conductivity such as La0.75Sr0.25Cr0.5Mn0.5O3-delta (LSCM) and La4Sr8Ti11Mn0.5Ga0.5O37.5-delta (LSTMG). The introduction of Cu results in a marked improvement of the polarisation resistance values and hence in the performance. The best results correspond to the addition of similar to 15% of CuO. In both systems, the polarisation resistances were improved by a least a factor of 2. Despite there are reports claiming that the CuO-zirconia-based systems exhibit catalytic activity, such an improvement seems to be mainly related to the capability of CuO as a sintering agent, helping to bridge electrode particles together, creating new electronic paths and thus effectively increasing the triple phase boundary through the whole electrode material. (C) 2007 Published by Elsevier Ltd.

AB - A Cu-metal-based cermet was used to improve the electrochemical properties of two novel oxide-based systems with intrinsic low electronic conductivity such as La0.75Sr0.25Cr0.5Mn0.5O3-delta (LSCM) and La4Sr8Ti11Mn0.5Ga0.5O37.5-delta (LSTMG). The introduction of Cu results in a marked improvement of the polarisation resistance values and hence in the performance. The best results correspond to the addition of similar to 15% of CuO. In both systems, the polarisation resistances were improved by a least a factor of 2. Despite there are reports claiming that the CuO-zirconia-based systems exhibit catalytic activity, such an improvement seems to be mainly related to the capability of CuO as a sintering agent, helping to bridge electrode particles together, creating new electronic paths and thus effectively increasing the triple phase boundary through the whole electrode material. (C) 2007 Published by Elsevier Ltd.

KW - LSCM

KW - LSTMG

KW - anode

KW - solid oxide fuel cell

KW - polarisation

KW - 13-WEEK INHALATION EXPOSURE

KW - SUPPORTED COPPER-CATALYSTS

KW - METHANOL SYNTHESIS

KW - ZIRCONIA MORPHOLOGY

KW - OXYGEN VACANCY

KW - H-2 OXIDATION

KW - PART I

KW - TEMPERATURE

KW - CO

KW - ELECTRODE

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U2 - 10.1016/j.electacta.2007.05.060

DO - 10.1016/j.electacta.2007.05.060

M3 - Article

SN - 0013-4686

VL - 52

SP - 7217

EP - 7225

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Improvement of the electrochemical properties of novel solid oxide fuel cell anodes, La_0.75Sr_0.25Cr_0.5Mn_0.5O₃₋_δ and La₄Sr₈Ti₁₁Mn_0.5Ga_0.5O_37.5−_δ, using Cu–YSZ-based cermets

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