A Preliminary Study on WO3‐Infiltrated W–Cu–ScYSZ Anodes for Low Temperature Solid Oxide Fuel Cells

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

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@article{dc3fe9bb18c74e4c999a4cedacd7b3af,
title = "A Preliminary Study on WO<sub>3</sub>‐Infiltrated W–Cu–ScYSZ Anodes for Low Temperature Solid Oxide Fuel Cells",
publisher = "Wiley - V C H Verlag GmbH & Co. KGaA",
author = "{Abdul Jabbar}, {Mohammed Hussain} and {Reddy Sudireddy}, Bhaskar and Høgh, {Jens Valdemar Thorvald} and Nikolaos Bonanos",
year = "2012",
doi = "10.1002/fuce.201200003",
volume = "12",
number = "4",
pages = "530--536",
journal = "Fuel Cells",
issn = "1615-6846",

}

RIS

TY - JOUR

T1 - A Preliminary Study on WO<sub>3</sub>‐Infiltrated W–Cu–ScYSZ Anodes for Low Temperature Solid Oxide Fuel Cells

A1 - Abdul Jabbar,Mohammed Hussain

A1 - Reddy Sudireddy,Bhaskar

A1 - Høgh,Jens Valdemar Thorvald

A1 - Bonanos,Nikolaos

AU - Abdul Jabbar,Mohammed Hussain

AU - Reddy Sudireddy,Bhaskar

AU - Høgh,Jens Valdemar Thorvald

AU - Bonanos,Nikolaos

PB - Wiley - V C H Verlag GmbH & Co. KGaA

PY - 2012

Y1 - 2012

N2 - Preparation and electrochemical characterization of WO3‐infiltrated 0.48W–0.52Cu–ScYSZ (WCS) anode for solid oxide fuel cell are reported. The DC conductivity of a WO3 ceramic was 1,200 and 24 S cm–1 in reducing and oxidizing atmospheres, respectively, at 650 °C. WCS porous backbones in the form of symmetric cells were prepared by screen printing of WO3–CuO–ScYSZ ink and subsequent sintering at 1,300 °C for 1 h in 9% H2/N2. Analysis of the sintered backbone by X‐ray diffraction showed the metallic W and Cu phases. Precursor solutions of WO3 or CuO were infiltrated into porous WCS backbones to form the anode. The electrochemical performance of these anodes measured by impedance spectroscopy showed polarization resistances of 11 and 6.5 Ω cm2 for WO3 and CuO infiltrated anodes, respectively, at 600 °C in humidified hydrogen. Activation energy values of 86.8 and 96.5 kJ mol–1 were obtained for WO3 and CuO infiltrated WCS anodes, respectively. The microstructure of the tested anodes showed well‐dispersed sub‐micron particles of WO3 in the WCS backbone whereas CuO infiltration resulted in a dense microstructure.

AB - Preparation and electrochemical characterization of WO3‐infiltrated 0.48W–0.52Cu–ScYSZ (WCS) anode for solid oxide fuel cell are reported. The DC conductivity of a WO3 ceramic was 1,200 and 24 S cm–1 in reducing and oxidizing atmospheres, respectively, at 650 °C. WCS porous backbones in the form of symmetric cells were prepared by screen printing of WO3–CuO–ScYSZ ink and subsequent sintering at 1,300 °C for 1 h in 9% H2/N2. Analysis of the sintered backbone by X‐ray diffraction showed the metallic W and Cu phases. Precursor solutions of WO3 or CuO were infiltrated into porous WCS backbones to form the anode. The electrochemical performance of these anodes measured by impedance spectroscopy showed polarization resistances of 11 and 6.5 Ω cm2 for WO3 and CuO infiltrated anodes, respectively, at 600 °C in humidified hydrogen. Activation energy values of 86.8 and 96.5 kJ mol–1 were obtained for WO3 and CuO infiltrated WCS anodes, respectively. The microstructure of the tested anodes showed well‐dispersed sub‐micron particles of WO3 in the WCS backbone whereas CuO infiltration resulted in a dense microstructure.

KW - Infiltration

KW - Low Temperature SOFC Anodes

KW - Tungsten Oxide

U2 - 10.1002/fuce.201200003

DO - 10.1002/fuce.201200003

JO - Fuel Cells

JF - Fuel Cells

SN - 1615-6846

IS - 4

VL - 12

SP - 530

EP - 536

ER -