Electrochemical Investigation of Composite Cathodes with SmBa0.5Sr0.5Co2O5+δ Cathodes for Intermediate Temperature-Operating Solid Oxide Fuel Cell

Jung Hyun Kim; Mark Cassidy; John Thomas Sirr Irvine; Joongmyeon Bae

doi:10.1021/cm901720w

Electrochemical Investigation of Composite Cathodes with SmBa_0.5Sr_0.5Co₂O_5+δ Cathodes for Intermediate Temperature-Operating Solid Oxide Fuel Cell

Jung Hyun Kim, Mark Cassidy, John Thomas Sirr Irvine, Joongmyeon Bae

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

Abstract

The electrochemical characteristics of the samarium and strontium doped layered perovskite (SmBa1-xSrxCo2O5+delta), x = 0.5) have been investigated for possible application as a cathode material for ail intermediate temperature-operating solid oxide fuel cell (IT-SOFC). The cathodic polarization of single-phase and composite cathodes with 10 mol % gadolinia-doped ceria (Ce0.9Gd0.1O2-delta, CGO91) shows that a weight ratio between SmBa0.5Sr0.5Co2O5+delta (SBSCO) and CGO91 of 1:1 (50 wt % SBSCO and 50 wt% CGO91, SBSCO:50) gives the lowest area specific resistance (ASR) of 0.10 Omega cm 2 at 600 degrees C and 0.013 Omega cm(2) at 700 degrees C. The maximum and minimum electrical conductivity in SBSCO are 1280 S cm(-1) at 50 degrees C and 280 S cm(-1) at 900 degrees C, with the influence of oxygen partial pressure indicating p-type conduction. The maximum power density of SBSCO:50 in an anode supported SOFC was 1.31 W cm(-2) at 800 degrees C and 0.75 W cm(-2) at 700 degrees C.

Original language	English
Pages (from-to)	883-892
Number of pages	10
Journal	Chemistry of Materials
Volume	22
Issue number	3
Early online date	23 Nov 2009
DOIs	https://doi.org/10.1021/cm901720w
Publication status	Published - 9 Feb 2010

Keywords

CHEMICAL COMPATIBILITY
ELECTRICAL-PROPERTIES
LAYERED PEROVSKITE
IT-SOFC
PERFORMANCE
GDBACO2O5+X
ELECTRODES
DIFFUSION
EXCHANGE
CHARGE

Access to Document

10.1021/cm901720w

Material for high Temp FCT EP/E064248/1: Materials for High Temperature Fuel Cell Technology
Irvine, J. T. S. (PI), Cassidy, M. (CoI), Connor, P. A. (CoI), Savaniu, C. D. (CoI) & Tao, S. (CoI)
EPSRC
1/01/08 → 31/12/12
Project: Standard
CarbonVision2 Fuel Cell Tec EP/E045421/1: Fuel Cell Technology, Enabling a Robust Clean Energy Economy
Irvine, J. T. S. (PI), Connor, P. A. (CoI) & Tao, S. (CoI)
EPSRC
1/04/07 → 31/03/12
Project: Standard

Cite this

@article{f5ec3f27678648a1804af31a9e5440b4,

title = "Electrochemical Investigation of Composite Cathodes with SmBa0.5Sr0.5Co2O5+δ Cathodes for Intermediate Temperature-Operating Solid Oxide Fuel Cell",

abstract = "The electrochemical characteristics of the samarium and strontium doped layered perovskite (SmBa1-xSrxCo2O5+delta), x = 0.5) have been investigated for possible application as a cathode material for ail intermediate temperature-operating solid oxide fuel cell (IT-SOFC). The cathodic polarization of single-phase and composite cathodes with 10 mol % gadolinia-doped ceria (Ce0.9Gd0.1O2-delta, CGO91) shows that a weight ratio between SmBa0.5Sr0.5Co2O5+delta (SBSCO) and CGO91 of 1:1 (50 wt % SBSCO and 50 wt% CGO91, SBSCO:50) gives the lowest area specific resistance (ASR) of 0.10 Omega cm 2 at 600 degrees C and 0.013 Omega cm(2) at 700 degrees C. The maximum and minimum electrical conductivity in SBSCO are 1280 S cm(-1) at 50 degrees C and 280 S cm(-1) at 900 degrees C, with the influence of oxygen partial pressure indicating p-type conduction. The maximum power density of SBSCO:50 in an anode supported SOFC was 1.31 W cm(-2) at 800 degrees C and 0.75 W cm(-2) at 700 degrees C.",

keywords = "CHEMICAL COMPATIBILITY, ELECTRICAL-PROPERTIES, LAYERED PEROVSKITE, IT-SOFC, PERFORMANCE, GDBACO2O5+X, ELECTRODES, DIFFUSION, EXCHANGE, CHARGE",

author = "Kim, {Jung Hyun} and Mark Cassidy and Irvine, {John Thomas Sirr} and Joongmyeon Bae",

year = "2010",

month = feb,

day = "9",

doi = "10.1021/cm901720w",

language = "English",

volume = "22",

pages = "883--892",

journal = "Chemistry of Materials",

issn = "0897-4756",

publisher = "American Chemical Society (ACS)",

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AU - Kim, Jung Hyun

AU - Cassidy, Mark

AU - Irvine, John Thomas Sirr

AU - Bae, Joongmyeon

PY - 2010/2/9

Y1 - 2010/2/9

N2 - The electrochemical characteristics of the samarium and strontium doped layered perovskite (SmBa1-xSrxCo2O5+delta), x = 0.5) have been investigated for possible application as a cathode material for ail intermediate temperature-operating solid oxide fuel cell (IT-SOFC). The cathodic polarization of single-phase and composite cathodes with 10 mol % gadolinia-doped ceria (Ce0.9Gd0.1O2-delta, CGO91) shows that a weight ratio between SmBa0.5Sr0.5Co2O5+delta (SBSCO) and CGO91 of 1:1 (50 wt % SBSCO and 50 wt% CGO91, SBSCO:50) gives the lowest area specific resistance (ASR) of 0.10 Omega cm 2 at 600 degrees C and 0.013 Omega cm(2) at 700 degrees C. The maximum and minimum electrical conductivity in SBSCO are 1280 S cm(-1) at 50 degrees C and 280 S cm(-1) at 900 degrees C, with the influence of oxygen partial pressure indicating p-type conduction. The maximum power density of SBSCO:50 in an anode supported SOFC was 1.31 W cm(-2) at 800 degrees C and 0.75 W cm(-2) at 700 degrees C.

AB - The electrochemical characteristics of the samarium and strontium doped layered perovskite (SmBa1-xSrxCo2O5+delta), x = 0.5) have been investigated for possible application as a cathode material for ail intermediate temperature-operating solid oxide fuel cell (IT-SOFC). The cathodic polarization of single-phase and composite cathodes with 10 mol % gadolinia-doped ceria (Ce0.9Gd0.1O2-delta, CGO91) shows that a weight ratio between SmBa0.5Sr0.5Co2O5+delta (SBSCO) and CGO91 of 1:1 (50 wt % SBSCO and 50 wt% CGO91, SBSCO:50) gives the lowest area specific resistance (ASR) of 0.10 Omega cm 2 at 600 degrees C and 0.013 Omega cm(2) at 700 degrees C. The maximum and minimum electrical conductivity in SBSCO are 1280 S cm(-1) at 50 degrees C and 280 S cm(-1) at 900 degrees C, with the influence of oxygen partial pressure indicating p-type conduction. The maximum power density of SBSCO:50 in an anode supported SOFC was 1.31 W cm(-2) at 800 degrees C and 0.75 W cm(-2) at 700 degrees C.

KW - CHEMICAL COMPATIBILITY

KW - ELECTRICAL-PROPERTIES

KW - LAYERED PEROVSKITE

KW - IT-SOFC

KW - PERFORMANCE

KW - GDBACO2O5+X

KW - ELECTRODES

KW - DIFFUSION

KW - EXCHANGE

KW - CHARGE

U2 - 10.1021/cm901720w

DO - 10.1021/cm901720w

M3 - Article

SN - 0897-4756

VL - 22

SP - 883

EP - 892

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 3

ER -

Electrochemical Investigation of Composite Cathodes with SmBa0.5Sr0.5Co2O5+δ Cathodes for Intermediate Temperature-Operating Solid Oxide Fuel Cell

Abstract

Keywords

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Projects

Material for high Temp FCT EP/E064248/1: Materials for High Temperature Fuel Cell Technology

CarbonVision2 Fuel Cell Tec EP/E045421/1: Fuel Cell Technology, Enabling a Robust Clean Energy Economy

Cite this

Electrochemical Investigation of Composite Cathodes with SmBa_0.5Sr_0.5Co₂O_5+δ Cathodes for Intermediate Temperature-Operating Solid Oxide Fuel Cell