Performance of LST-GDC Composite Anodes for Solid Oxide Fuel Cells

• Published in: ECS transactions 2013-01, Vol.57 (1), p.1193-1199
• Main Authors: Fan, Liquan, Wang, Yuwei, Huo, Hua, Xiong, Yueping
• Format: Article
• Language: English
• ISSN: 1938-5862; 1938-6737
• DOI: 10.1149/05701.1193ecst

La0.2Sr0.8TiO3 (LST) nanoparticles were fabricated by electrospinning. This material can be used as an alternative to the conventional nickel cermet anodes to solve the carbon deposition problem encountered in hydrocarbon fed solid oxide fuel cells (SOFCs). The phase pure LST material with perovskite structure has been obtained when the calcination temperature exceeds 800°C. The as-made LST nanoparticles were then sintered on ScSZ electrolyte at 1000°C to form nanoparticle-based LST anodes. In order to improve the electrochemical performance of the LST anode, Gd0.2Ce0.8O1.9 (GDC) precursor solution was infiltrated into the scaffolds formed by LST nanoparticles with different LST : GDC mass ratios. An optimal polarization resistance of 1.03 Ω cm2 has been achieved with the LST : GDC mass ratio of 1:0.50 when tested at 800 °C in 97% H2+3% H2O atmosphere. The result demonstrates the promising application of LST-GDC as SOFC anode material.