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Research Papers

Intermediate Temperature Solid Oxide Fuel Cells With Bi2O3Eu2O3 Infiltrated La0.8Sr0.2MnO3 Cathodes

[+] Author and Article Information
T. Yoshikawa1

Department of Chemistry, Faculty of Engineering, Mie University, 1577, Kurima Machiya-cho, Tsu, Mie 514-8507, Japantkyoshi@mach.mie-u.ac.jp

N. Shinde, K. Murata, A. Hirano, Y. Takeda, O. Yamamoto

Department of Chemistry, Faculty of Engineering, Mie University, 1577, Kurima Machiya-cho, Tsu, Mie 514-8507, Japan

K. Yamahara

 Mitsubishi Chemicals, 4-14-1 Shiba, Minatoku, Tokyo 108-0014, Japan

1

Corresponding author.

J. Fuel Cell Sci. Technol 7(6), 061004 (Aug 17, 2010) (5 pages) doi:10.1115/1.4001320 History: Received July 03, 2008; Revised February 02, 2010; Published August 17, 2010; Online August 17, 2010

The fuel cell performance of the anode supported cell with Eu2O3 doped Bi2O3 infiltrated La0.8Sr0.2MnO3(LSM)Zr0.92Y0.16O2.08(YSZ) composite cathode, Ni-YSZ anode, and YSZ electrolyte was examined in the temperature range 850650°C. The cell performance was improved by infiltrating the nanoparticle Bi2O3Eu2O3 solid solution into the porous LSM-YSZ cathode. The power density of the cell with the LSM-LSZ cathode was enhanced from 0.28W/cm2 to 0.52W/cm2 at 0.7 V and 750°C by infiltration of (Bi2O3)0.7(Eu2O3)0.3. The improvement of the power density was explained by decreasing the electrode resistance for oxygen reduction on the cathode. No significant degradation of the power density was observed within 200 h at 750°C and 0.7 V.

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Copyright © 2010 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

XRD pattern of (Bi2O3)0.8(Er2O3)0.2 infiltrated LSM-YSZ

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Figure 2

SEM image of (Bi2O3)0.8(Er2O3)0.2 infiltrated LSM-YSZ

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Figure 3

Impedance spectra of (A) LSM-YSZ/YSZ/LSM-YSZ and (B) 3EBO infiltrated LSM-YSZ/YSZ/3EBO infiltrated LSM-YSZ cells at 600°C (○) and 800°C (◻)

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Figure 4

Arrhenius plots of the electrode resistance of LSM-YSZ (△) and 3EBO infiltrated LSM-YSZ (◆)

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Figure 5

Oxygen reduction polarization voltage (η) versus time curves for the LSM-YSZ electrode (◆) and LSM-YSZ-3EBO (◼) at 750°C.

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Figure 6

Current–voltage and power density curves for anode support cells with (A) the LSM-YSZ cathode and (B) the 3EBO infiltrated LSM-YSZ cathode under moist H2 fuel and air at various temperatures. ◆: 850°C, △: 800°C, ◼: 750°C, ○: 660°C.

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Figure 7

Impedance spectra at open circuit for anode support cells with (A) LSM-YSZ and (B) 3EBO infiltrated LSM-YSZ under moist H2 fuel and air

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Figure 8

Time dependence of power density at 0.7 V of the anode support cell with the 3EBO infiltrated LSM-YSZ cathode under moist H2 fuel and air

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Figure 9

Current–voltage and power density curves for anode support cell with the Bi2O3 infiltrated LSM-YSZ cathode under moist H2 fuel and air. ◆: 850°C, △: 800°C, ◼: 750°C, ○: 660°C.

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Figure 10

XRD pattern of Bi2O3 infiltrated LSM-YSZ

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