Details

Autor(en) / Beteiligte

• Wu, Liuer
• Wang, Shuang
• Wang, Shaorong
• Xia, Changrong

Titel

Enhancing the performance of doped ceria interlayer for tubular solid oxide fuel cells

Ist Teil von

• Journal of power sources, 2013-10, Vol.240, p.241-244

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Doped ceria interlayer fabricated by conventional wet ceramic process such as dip-coating often suffers from high resistance due to either low density or solid-state reaction with yttria-stabilized zirconia (YSZ) electrolyte in solid oxide fuel cells (SOFCs). This work presents a new route to reduce the resistance by increasing the density while minimizing the solid-state reaction through impregnating samaria-doped ceria (SDC) nano-particles to porous SDC interlayer of anode-supported tubular SOFCs. Results show that impregnated fine structure can substantially reduce the ohmic resistance, from 0.140 to 0.087 Ω cm2 at 750 °C, and consequently significantly improve the fuel cell performance, peak power density from 1.01 to 1.50 W cm−2 at 750 °C. The significant improvements demonstrate that impregnation is an effective method to improve the interlayer performance. •Impregnation is first proposed to enhance the doped ceria interlayer performance.•The interlayer resistance is substantially reduced with ion impregnation.•Peak power density of tubular cells increases from 1.01 to 1.50 W cm−2 at 750 °C.