Novel BaBi0.05Co0.8Ta0.15O3-delta cathode material for intermediate temperature solid oxide fuel cells

作者：Cheng, Ye; Zhou, Qingjun^*; Chen, Libing; Xie, Yantao

来源：Materials Letters, 2017, 193: 105-107.

DOI：10.1016/j.matlet.2017.01.066

• BaBi0.05Co0.08Ta0.15O3-delta
• X-ray techniques
• Structural
• Sintering

Cathode material BaBi0.05CO0.8Ta0.15 O3-delta (BBCT) was synthesized by a solid-state reaction for intermediate-temperature solid oxide fuel cells (IT-SOFCs). The X-ray techniques had been used for structural characterizations. BBCT forms a pure cubic perovskite structure and exhibits chemical compatibility with the La(0.9)Sr(0.1)G(0.8)Mg(0.2)O(3-delta__) (LSGM) electrolyte. The thermal expansion coefficient (TEC) of the BBCT is 20 x 10(-6) K-1. The electrical conductivity are 7.4-10.7 S cm(-1) in the temperature range of 600-800 degrees C in ambient air. The polarization resistance (Rp) of BBCT cathode on LSGM electrolyte is 0.023, 0.036, 0.065 Omega cm(2) at 800, 750, 700 degrees C, respectively. Maximum power density is 664 mW cm(-2) at 800 degrees C. The encouraging results promise BBCT as an alternative cathode material for IT-SOFCs.

• 出版日期2017-4-15
• 单位中国民航大学