Intermediate-temperature solid oxide fuel cells with high performance cobalt-doped Pr0.5Ba0.5FeO3-δ anodes

JOURNAL OF ALLOYS AND COMPOUNDS

卷:741

Article

Tao, Youkun¹  Zhou, Yue¹  Li, Wenyuan¹  Shao, Jing²  Bai, Lei³  Liu, Xingbo¹ 

[1] West Virginia Univ, Dept Mech & Aerosp Engn, 395 Evansdale Dr, Morgantown, WV 26505 USA

[2] Shenzhen Univ, Coll Chem & Environm Engn, 3688 Nanhai Ave, Shenzhen, Peoples R China

[3] West Virginia Univ, Dept Chem Engn, 395 Evansdale Dr, Morgantown, WV 26505 USA

关键词: Solid oxide fuel cells;    Electrode materials;    Anodes;    Perovskites;    Symmetrical fuel cells;   

DOI  :  10.1016/j.jallcom.2018.01.167

来源: Elsevier

【 摘 要 】

Cobalt doped Pr0.5Ba0.5FeO3-delta perovskite exhibits superior electrochemical performance when it was tested as an anode for intermediate temperature solid oxide fuel cell. For the anode with a composition of Pr0.5Ba0.5Co0.25Fe0.75O3-delta-Ce0.9Gd0.1O2-delta, the polarization resistance R-p was as low as 0.05 Omega cm(2) at 700 degrees C in air and 0.21 Omega cm(2) at 700 degrees C in 3% H2O-97% H-2. In addition, this full-ceramic anode was tolerant to 50 ppm H2S and showed stable performance during the preliminary test. The ceramic composite also exhibited superior activity for cathodic oxygen-reduction-reaction (ORR), thus enabled a symmetrical fuel cell. In a lab designed full-ceramic symmetrical fuel cell, a power density of 0.75 Wcm(-2) at 750 degrees C has been achieved, demonstrating the superior properties of this oxide. (C) 2018 Elsevier B.V. All rights reserved.

【 授权许可】

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