SrCo0.4Fe0.4Zr0.1Y0.1O3-δ, A new CO2 tolerant cathode for proton-conducting solid oxide fuel cells

被引：29
作者：
Lv, Xiuqing [1 ,2 ]
Chen, Huili [1 ]
Zhou, Wei [3 ]
Li, Si-Dian [1 ]
Cheng, Fangqin [4 ]
Shao, Zongping [3 ,5 ]
机构：
[1] Shanxi Univ, Inst Mol Sci, Key Lab Mat Energy Convers & Storage Shanxi Prov, Taiyuan 030006, Peoples R China
[2] Jinzhong Univ, Dept Chem & Chem Engn, Jinzhong 030619, Peoples R China
[3] Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, 30 Puzhu Rd S, Nanjing 211816, Peoples R China
[4] Minist Educ Peoples Republ China, Engn Res Ctr CO Emiss Reduct & Resource Utilizat, Inst Resources & Environm Engn, Taiyuan 030006, Peoples R China
[5] Curtin Univ, Dept Chem Engn, Perth, WA 6845, Australia
来源：
RENEWABLE ENERGY | 2022年 / 185卷
关键词：
Solid oxide fuel cells; Cathode; Proton-conducting; CO2; tolerant; Structural stability; HIGH-PERFORMANCE CATHODE; DOPING STRATEGY; ELECTROLYTES; OPTIMIZATION; PEROVSKITE; CATALYSTS;
D O I：
10.1016/j.renene.2021.12.030
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
CO2 poisoning is not a negligible issue for SrCoO3-delta 5 based materials, which limits their application as cathodes for solid oxide fuel cells (SOFCs). In this paper, iron, zirconium, and yttrium were co-doped into SrCoO3-delta to form a structurally stable cubic perovskite material, SrCo0.4Fe0.4Zr0.1Y0.1O3-delta (SCFZY). The CO2 adsorption-desorption on SCFZY was studied via X-ray diffraction and CO2 temperature-programmed desorption. The polarization resistance of the symmetric cell SCFZY vertical bar BaZr0.1Ce0.7Y0.1Yb0.1O3-delta (BZCYYb)vertical bar SCFZY was tested in air containing 10 vol% CO2 to evaluate the SCFZY's CO2-tolerance as a SOFCs cathode. When applied as a SOFCs cathode in a cell with a proton-conducting electrolyte BZCYYb, SCFZY showed significant CO2-tolerance. The single-cell NiO-BZCYYb vertical bar BZCYYb vertical bar BZCYYb-SCFZY showed an output with a maximum power density of 679 mW cm(-2) at 700 degrees C and good durability of 500 h. The SCFZY cathode also displayed better CO2-tolerance than the Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCF) cathode for IT-SOFCs. (c) 2021 Elsevier Ltd. All rights reserved.
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页码：8 / 16
页数：9
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