Title: Break Down of Losses in Thin Electrolyte SOFCs
Abstract: Abstract The contributions of the individual components of the cell (anode, cathode, and electrolyte) to the cell resistance were determined experimentally, directly from impedance spectra obtained from a full cell. It was an anode supported thin electrolyte cell, consisting of a YSZ electrolyte, a Ni/YSZ cermet anode, and a LSM composite cathode. Additional, qualitative information was obtained using symmetric cells with LSM composite electrodes. The investigations were carried out in the temperature interval from 700 to 850 °C. The electrolyte and anode activation energies obtained were 0.9 and 1.1 eV, respectively, which is in relatively good agreement with literature values. The anode resistance was 0.24 Ω cm 2 and the cathode resistance was 0.58 Ω cm 2 at 700 °C, corresponding to 23% and 56% of the total resistance, respectively.
Publication Year: 2006
Publication Date: 2006-04-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 95
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