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Research Papers

Zn0.6Fe0.1Cu0.3/GDC Composite Anode for Solid Oxide Fuel Cell

[+] Author and Article Information
Rizwan Raza1

Department of Energy Technology, Royal Institute of Technology (KTH), Stockholm 10044, Sweden; Department of Physics, COMSATS Institute of Information Technology, Lahore 54000, Pakistanrizwanr@kth.se

Bin Zhu

Department of Energy Technology, Royal Institute of Technology (KTH), Stockholm 10044, Sweden; GETT Fuel Cell AB, Stora Nygatan 33, Stockholm S-10314, Sweden

Torsten H. Fransson

Department of Energy Technology, Royal Institute of Technology (KTH), Stockholm 10044, Sweden

1

Corresponding author.

J. Fuel Cell Sci. Technol 8(3), 031010 (Feb 22, 2011) (5 pages) doi:10.1115/1.4002904 History: Received April 07, 2010; Revised September 15, 2010; Published February 22, 2011; Online February 22, 2011

Recent research results show that homogeneity and microstructure are very important parameters for the development of low cost materials with better performance for fuel cell applications. This research effort has been contributed in the development of low temperature solid oxide fuel cell (LTSOFC) material and technology as well as applications for polygeneration. The microstructure and electrochemical analyses were conducted. We found a series of new electrode materials which can run solid oxide fuel cell at 300600°C range with high performances, e.g., a high power density output of 980mWcm2 was obtained at 570°C. The fuel cell electrodes were prepared from metal oxide materials through a solid state reaction and then mixed with doped ceria. The obtained results have many advantages for the development of LTSOFCs for polygeneration. The nanostructure of the anode has been studied by high-resolution electron microscopy, the crystal structure and lattice parameters have also been studied by X-ray diffraction. The electrical conductivity of the composite anode was studied by electrochemical impedance spectra.

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Copyright © 2011 by American Society of Mechanical Engineers
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Figures

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Figure 1

X-ray diffraction pattern for ZFC-GDC after being sintered at 800°C for 2 h

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Figure 2

SEM images of ZFC-GDC

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Figure 3

High-resolution TEM image of ZFC-GDC

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Figure 4

Fuel cell performances (I-V/I-P characteristics) with H2 at different temperatures

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Figure 5

Fuel cell performances (I-V/I-P characteristics) with methanol at different temperatures

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Figure 6

Electrical conductivity (dc four-probe) in air and H2 atmospheres

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Figure 7

Arrhenius plots in air and H2 atmospheres: (a) linear fit in H2 and activation energy and (b) linear fit in air and activation energy

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Figure 8

ac impedance spectra: (a) ac impedance spectrum of the single cell at 500°C and (b) ac impedance spectrum of the composite anode at 500°C

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