SrCo0.8Ti0.1Ta0.1O3-δ perovskite: A new highly active and durable cathode material for intermediate-temperature solid oxide fuel cells

被引：62
作者：
Gu, Hongxia [1 ]
Xu, Meigui [1 ]
Song, Yufei [1 ]
Zhou, Chuan [1 ]
Su, Chao [2 ]
Wang, Wei [1 ]
Ran, Ran [1 ]
Zhou, Wei [1 ]
Shao, Zongping [1 ,2 ]
机构：
[1] Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Coll Chem Engn, Nanjing 210009, Peoples R China
[2] Curtin Univ, WA Sch Mines Minerals Energy & Chem Engn WASM MEC, Perth, WA 6845, Australia
来源：
COMPOSITES PART B-ENGINEERING | 2021年 / 213卷
基金：
澳大利亚研究理事会; 中国国家自然科学基金;
关键词：
Solid oxide fuel cell; Perovskite oxide; Co-doping; Cathode; Oxygen reduction; CO-DOPED PEROVSKITE; OXYGEN REDUCTION REACTION; HIGH-PERFORMANCE CATHODE; CRYSTAL-STRUCTURE; SURFACE EXCHANGE; ELECTRONEGATIVITY; DIFFUSION; EFFICIENT; ELECTROCATALYSTS; SRCOO3-DELTA;
D O I：
10.1016/j.compositesb.2021.108726
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Reducing the operating temperatures of solid oxide fuel cells (SOFCs) to the intermediate-temperature range (IT, 400-650 degrees C) can bring about several benefits including cost effectiveness, prolonged lifetime and flexible sealing. Nevertheless, the accompanying deterioration of cathodic activity for oxygen reduction reaction (ORR) introduces a large obstacle for commercial applications of IT-SOFCs. Herein, a new perovskite SrCo0.8Ti0.1Ta0.1O3-delta (SCTT) is developed by co-doping titanium and tantalum into the B-site of parent SrCoO3 oxide, which may tackle this problem. At 400-650 degrees C, SCTT shows high electrical conductivities (65-142 S cm(-1)), appropriate oxygen vacancy concentrations (0.23-0.27) and high bulk diffusion capability due to a synergy between the two dopants in SCTT. Consequently, SCTT exhibits a favorable ORR activity with an area-specific resistance of only 0.17 Omega cm(2) at 500 degrees C on samaria-doped ceria electrolyte, and the corresponding cell generates a high peak power density (PPD) of 0.90 W cm(-2) at 500 degrees C with negligible performance decay for 180 h. Additionally, SCTT performs well in protonic ceramic fuel cells, achieving a PPD of 0.78 W cm(-2) at 650 degrees C and a high durability for similar to 176 h at 550 degrees C. This work provides a new promising cathode material that may accelerate the commercialization of IT-SOFC technology.
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页数：8
相关论文
共 62 条
[1]   A New Family of Mo-Doped SrCoO3-δ Perovskites for Application in Reversible Solid State Electrochemical Cells [J].
Aguadero, A. ;
Perez-Coll, D. ;
Alonso, J. A. ;
Skinner, S. J. ;
Kilner, J. .
CHEMISTRY OF MATERIALS, 2012, 24 (14) :2655-2663
[2]   Study of the Crystal Structure, Thermal Stability and Conductivity of Sr(V0.5Mo0.5)O3+δ as SOFC Material [J].
Aguadero, A. ;
de la Calle, C. ;
Perez-Coll, D. ;
Alonso, J. A. .
FUEL CELLS, 2011, 11 (01) :44-50
[3]   SrCo0.95Sb0.05O3-δ as Cathode Material for High Power Density Solid Oxide Fuel Cells [J].
Aguadero, Ainara ;
Antonio Alonso, Jose ;
Perez-Coll, Domingo ;
de la Calle, Cristina ;
Fernandez-Diaz, Maria Teresa ;
Goodenough, John B. .
CHEMISTRY OF MATERIALS, 2010, 22 (03) :789-798
[4]  
[Anonymous], CHEM MATER, V22, P789
[5]   Phase structure, microstructure, and electrical properties of Sb-modified (K, Na, Li) (Nb, Ta) O3 piezoelectric ceramics [J].
Chang, Yunfei ;
Yang, Zupei ;
Xiong, Lirong ;
Liu, Zonghuai ;
Wang, Zenglin .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2008, 91 (07) :2211-2216
[6]   Surface exchange and bulk diffusion properties of Ba0.5Sr0.5Co0.8Fe0.2O3-δ mixed conductor [J].
Chen, Dengjie ;
Shao, Zongping .
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (11) :6948-6956
[7]   A robust and active hybrid catalyst for facile oxygen reduction in solid oxide fuel cells [J].
Chen, Yu ;
Chen, Yan ;
Ding, Dong ;
Ding, Yong ;
Choi, YongMan ;
Zhang, Lei ;
Yoo, Seonyoung ;
Chen, Dongchang ;
Deglee, Ben ;
Xu, Han ;
Lu, Qiyang ;
Zhao, Bote ;
Vardar, Gulin ;
Wang, Jiayue ;
Bluhm, Hendrik ;
Crumlin, Ethan J. ;
Yang, Chenghao ;
Liu, Jiang ;
Yildiz, Bilge ;
Liu, Meilin .
ENERGY & ENVIRONMENTAL SCIENCE, 2017, 10 (04) :964-971
[8]   A Highly Efficient and Robust Nanofiber Cathode for Solid Oxide Fuel Cells [J].
Chen, Yu ;
Bu, Yunfei ;
Zhang, Yanxiang ;
Yan, Ruiqiang ;
Ding, Dong ;
Zhao, Bote ;
Yoo, Seonyoung ;
Dang, Dai ;
Hu, Renzong ;
Yang, Chenghao ;
Liu, Meilin .
ADVANCED ENERGY MATERIALS, 2017, 7 (06)
[9]   Tin and iron co-doping strategy for developing active and stable oxygen reduction catalysts from SrCoO3-δ for operating below 800 °C [J].
Chen, Yubo ;
Qian, Baoming ;
Shao, Zongping .
JOURNAL OF POWER SOURCES, 2015, 294 :339-346
[10]   Role of silver current collector on the operational stability of selected cobalt-containing oxide electrodes for oxygen reduction reaction [J].
Chen, Yubo ;
Wang, Fucun ;
Chen, Dengjie ;
Dong, Feifei ;
Park, Hee Jung ;
Kwak, Chan ;
Shao, Zongping .
JOURNAL OF POWER SOURCES, 2012, 210 :146-153
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