Paper Title:
Influence of Hydrogen Sulfide in Fuel on Electric Power of Solid Oxide Fuel Cell
  Abstract

Terminal voltage, electric power density and overpotential were measured for the solid oxide fuel cell with gadolinium-doped ceria electrolyte (Ce0.8Gd0.2O1.9, GDC), 30 vol% Ni-GDC anode and Pt cathode using a H2 fuel or biogas (CH4 47, CO2 31, H2 19 vol %) at 1073 K. Addition of 1 ppm H2S in the 3vol % H2O-containing H2 fuel gave no change in the open circuit voltage (0.79 - 0.80 V) and the maximum power density (65 - 72 mW/cm2). Furthermore, no reaction between H2S and Ni in the anode was suggested by the thermodynamic calculation. On the other hand, the terminal voltage and electric power density decreased when 1 ppm H2S gas was mixed with the biogas. After the biogas with 1 ppm H2S flowed into the anode for 8 h, the electric power density decreased from 125 to 90 mW/cm2. The reduced electric power density was also recovered by passing 3 vol % H2O-containing H2 fuel for 2 h.

  Info
Periodical
Materials Science Forum (Volumes 544-545)
Edited by
Hyungsun Kim, Junichi Hojo and Soo Wohn Lee
Pages
997-1000
DOI
10.4028/www.scientific.net/MSF.544-545.997
Citation
M. Nagamori, Y. Hirata, S. Sameshima, "Influence of Hydrogen Sulfide in Fuel on Electric Power of Solid Oxide Fuel Cell", Materials Science Forum, Vols. 544-545, pp. 997-1000, 2007
Online since
May 2007
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Price
$32.00
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