Highly durable anode supported solid oxide fuel cell with an infiltrated cathode

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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@article{489ecd7d03004e6bb6d08e9f149d0c5c,
title = "Highly durable anode supported solid oxide fuel cell with an infiltrated cathode",
keywords = "Cathode, Infiltration, Solid oxide fuel cells, Mixed ionic and electronic conductor, Electrochemical impedance spectroscopy, Scanning electron microscopy",
publisher = "Elsevier S.A.",
author = "Samson, {Alfred Junio} and Per Hjalmarsson and Martin Søgaard and Johan Hjelm and Nikolaos Bonanos",
year = "2012",
doi = "10.1016/j.jpowsour.2012.05.040",
volume = "216",
pages = "124--130",
journal = "Journal of Power Sources",
issn = "0378-7753",

}

RIS

TY - JOUR

T1 - Highly durable anode supported solid oxide fuel cell with an infiltrated cathode

A1 - Samson,Alfred Junio

A1 - Hjalmarsson,Per

A1 - Søgaard,Martin

A1 - Hjelm,Johan

A1 - Bonanos,Nikolaos

AU - Samson,Alfred Junio

AU - Hjalmarsson,Per

AU - Søgaard,Martin

AU - Hjelm,Johan

AU - Bonanos,Nikolaos

PB - Elsevier S.A.

PY - 2012

Y1 - 2012

N2 - <p>An anode supported solid oxide fuel cell with an La<sub>0.6</sub>Sr<sub>0.4</sub>Co<sub>1.05</sub>O<sub>3_</sub>δ (LSC) infiltrated-Ce<sub>0.9</sub>Gd<sub>0.1</sub>O<sub>1.95</sub> (CGO) cathode that shows a stable performance has been developed. The cathode was prepared by<br/> screen printing a porous CGO backbone on top of a laminated and co-fired anode supported half cell, consisting of a Nieyttria stabilized zirconia (YSZ) anode support, a Niescandia-doped yttria-stabilized<br/> zirconia (ScYSZ) anode, a ScYSZ electrolyte, and a CGO barrier layer. LSC was introduced into the CGO backbone by multiple infiltrations of an aqueous nitrate solution followed by firing. The cell was tested at 700 deg. C under a current density of 0.5 A cm<sup>-2</sup> for 1500 h using air as oxidant and humidified hydrogen as fuel. The electrochemical performance of the cell was analyzed by impedance spectroscopy and current evoltage relationships. No measurable degradation in the cell voltage or increase in the resistance from the recorded impedance was observed during long term testing. The power density reached 0.79Wcm<sup>-2</sup> at a cell voltage of 0.6 V at 750 deg. C. Post test analysis of the LSC infiltrated-CGO cathode by scanning electron microscopy revealed no significant micro-structural difference to that of a nominally identical untested counterpart.</p>

AB - <p>An anode supported solid oxide fuel cell with an La<sub>0.6</sub>Sr<sub>0.4</sub>Co<sub>1.05</sub>O<sub>3_</sub>δ (LSC) infiltrated-Ce<sub>0.9</sub>Gd<sub>0.1</sub>O<sub>1.95</sub> (CGO) cathode that shows a stable performance has been developed. The cathode was prepared by<br/> screen printing a porous CGO backbone on top of a laminated and co-fired anode supported half cell, consisting of a Nieyttria stabilized zirconia (YSZ) anode support, a Niescandia-doped yttria-stabilized<br/> zirconia (ScYSZ) anode, a ScYSZ electrolyte, and a CGO barrier layer. LSC was introduced into the CGO backbone by multiple infiltrations of an aqueous nitrate solution followed by firing. The cell was tested at 700 deg. C under a current density of 0.5 A cm<sup>-2</sup> for 1500 h using air as oxidant and humidified hydrogen as fuel. The electrochemical performance of the cell was analyzed by impedance spectroscopy and current evoltage relationships. No measurable degradation in the cell voltage or increase in the resistance from the recorded impedance was observed during long term testing. The power density reached 0.79Wcm<sup>-2</sup> at a cell voltage of 0.6 V at 750 deg. C. Post test analysis of the LSC infiltrated-CGO cathode by scanning electron microscopy revealed no significant micro-structural difference to that of a nominally identical untested counterpart.</p>

KW - Cathode

KW - Infiltration

KW - Solid oxide fuel cells

KW - Mixed ionic and electronic conductor

KW - Electrochemical impedance spectroscopy

KW - Scanning electron microscopy

U2 - 10.1016/j.jpowsour.2012.05.040

DO - 10.1016/j.jpowsour.2012.05.040

JO - Journal of Power Sources

JF - Journal of Power Sources

SN - 0378-7753

VL - 216

SP - 124

EP - 130

ER -