Details

Autor(en) / Beteiligte

• Wang, Yuansong
• Wang, Shaorong
• Wang, Zhenrong
• Wen, Tinglian
• Wen, Zhaoyin

Titel

Performance of Ba0.5Sr0.5Co0.8Fe0.2O3-δ-CGO -Ag cathode for IT-SOFCs

Ist Teil von

• Journal of alloys and compounds, 2007-01, Vol.428 (1-2), p.286-289

Ort / Verlag

Lausanne: Elsevier

Erscheinungsjahr

2007

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Single phase Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) was synthesized successfully at 1000 deg C by solid reaction method. The dependence of thermal expansion and electrical conductivity on temperatures were studied. Electrochemical properties of pure BSCF cathode and BSCF+CGO (20mol% Gd2O3-doped CeO2) composite cathode on CGO electrolyte at intermediate temperatures were investigated by using AC impedance analyzer. Additionally, a composite cathode of BSCF containing 30wt.% CGO and a small quantity of Ag was prepared and studied, which shows the lowest area specific resistance ( < 0.1Omegacm2 at temperatures higher than 700 deg C), being a high potential candidate of cathode for intermediate temperature SOFCs (IT-SOFCs, working at 800 deg C or lower temperatures).