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

被引：31

作者：

Samson, Alfred Junio ^{[1
]}

Hjalmarsson, Per ^{[1
]}

Sogaard, Martin ^{[1
]}

Hjelm, Johan ^{[1
]}

Bonanos, Nikolaos ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Energy Convers & Storage, DK-4000 Roskilde, Denmark

来源：

JOURNAL OF POWER SOURCES | 2012年 / 216卷

关键词：

Cathode; Infiltration; Solid oxide fuel cells; Mixed ionic and electronic conductor; Electrochemical impedance spectroscopy; Scanning electron microscopy; NANO-STRUCTURED ELECTRODES; HIGH-PERFORMANCE; SURFACE EXCHANGE; DIFFUSION; STABILITY;

D O I：

10.1016/j.jpowsour.2012.05.040

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An anode supported solid oxide fuel cell with an La0.6Sr0.4Co1.05O3-delta (LSC) infiltrated-Ce0.9Gd0.1O1.95 (CGO) cathode that shows a stable performance has been developed. The cathode was prepared by screen printing a porous CGO backbone on top of a laminated and co-fired anode supported half cell, consisting of a Ni-yttria stabilized zirconia (YSZ) anode support, a Ni-scandia-doped yttria-stabilized 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 degrees C under a current density of 0.5 A cm(-2) 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-voltage 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 0.79 W cm(-2) at a cell voltage of 0.6 V at 750 degrees 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. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：124 / 130

页数：7

共 14 条

[1] Oxygen tracer diffusion and surface exchange kinetics in La0.6Sr0.4CoO3-δ [J].

Berenov, A. V. ;

Atkinson, A. ;

Kilner, J. A. ;

Bucher, E. ;

Sitte, W. .

SOLID STATE IONICS, 2010, 181 (17-18) :819-826

[2] Assessment of doped ceria as electrolyte [J].

Dalslet, Bjarke ;

Blennow, Peter ;

Hendriksen, Peter Vang ;

Bonanos, Nikolaos ;

Lybye, Dorthe ;

Mogensen, Mogens .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2006, 10 (08) :547-561

[3] Co-doping of scandia-zirconia electrolytes for SOFCs [J].

Irvine, John T. S. ;

Dobson, Jeremy W. L. ;

Politova, Tatiana ;

Martin, Susana Garcia ;

Shenouda, Atef .

FARADAY DISCUSSIONS, 2007, 134 :41-49

[4] Nanoscale and nano-structured electrodes of solid oxide fuel cells by infiltration: Advances and challenges [J].

Jiang, San Ping .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2012, 37 (01) :449-470

[5] A review of wet impregnation - An alternative method for the fabrication of high performance and nano-structured electrodes of solid oxide fuel cells [J].

Jiang, SP .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 418 (1-2) :199-210

[6] Oxygen self-diffusion and surface exchange studies of oxide electrolytes having the fluorite structure [J].

Manning, PS ;

Sirman, JD ;

Kilner, JA .

SOLID STATE IONICS, 1996, 93 (1-2) :125-132

[7]

Mogensen M., 2003, High Temperature Solid Oxide Fuel Cells: Fundamentals, Design, and Applications, P261

[8] High Performance Cathodes for Solid Oxide Fuel Cells Prepared by Infiltration of La0.6Sr0.4CoO3-δ into Gd-Doped Ceria [J].

Samson, A. ;

Sogaard, M. ;

Knibbe, R. ;

Bonanos, N. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2011, 158 (06) :B650-B659

[9] Solid oxide fuel cell cathodes by infiltration of La0.6Sr0.4Co0.2Fe0.8O3-δ into Gd-Doped Ceria [J].

Shah, M. ;

Barnett, S. A. .

SOLID STATE IONICS, 2008, 179 (35-36) :2059-2064

[10] Synthesis and stability of a nanoparticle-infiltrated solid oxide fuel cell electrode [J].

Sholklapper, Tal Z. ;

Radmilovic, Velimir ;

Jacobson, Craig P. ;

Visco, Steven J. ;

De Jonghe, Lutgard C. .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2007, 10 (04) :B74-B76

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