High performance La0.8Sr0.2MnO3-coated Ba0.5Sr0.5Co0.8Fe0.2O3 cathode prepared by a novel solid-solution method for intermediate temperature solid oxide fuel cells

doi:10.1016/S1872-2067(12)60704-9

Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (1): 38-42.DOI: 10.1016/S1872-2067(12)60704-9

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High performance La_0.8Sr_0.2MnO₃-coated Ba_0.5Sr_0.5Co_0.8Fe_0.2O₃ cathode prepared by a novel solid-solution method for intermediate temperature solid oxide fuel cells

Li Meng, Fangzhong Wang, Ao Wang, Jian Pu, Bo Chi, Jian Li

Center for Fuel Cell Innovation, State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China

Received:2013-08-05 Revised:2013-09-02 Online:2013-12-23 Published:2014-01-17
Contact: Jian Li
Supported by:
This work was supported by the National Natural Science Foundation of China (U1134001).

Abstract

Abstract:

La_0.8Sr_0.2MnO₃ (LSM)-coated Ba_0.5Sr_0.5Co_0.8Fe_0.2O₃ (BSCF) composite powder (LSM-BSCF) was synthesized by a novel solid-solution method and investigated electrochemically as a cathode material for intermediate temperature solid oxide fuel cells. The cathode combined the merits of LSM and BSCF cathodes through an extended triple phase boundary and stabilized microstructure and demonstrated a polarization resistance between 0.61 and 0.09 Ω cm² at 600 to 750℃. Compared with high performance cathodes prepared by solution impregnation, this LSM-BSCF cathode greatly improved performance stability.

Key words: Solid oxide fuel cell, Intermediate temperature, La_0.8Sr_0.2MnO₃-Ba_0.5Sr_0.5Co_0.8Fe_0.2O₃ composite cathode, Polarization resistance, Performance stability

Li Meng, Fangzhong Wang, Ao Wang, Jian Pu, Bo Chi, Jian Li. High performance La_0.8Sr_0.2MnO₃-coated Ba_0.5Sr_0.5Co_0.8Fe_0.2O₃ cathode prepared by a novel solid-solution method for intermediate temperature solid oxide fuel cells[J]. Chinese Journal of Catalysis, 2014, 35(1): 38-42.

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High performance La_0.8Sr_0.2MnO₃-coated Ba_0.5Sr_0.5Co_0.8Fe_0.2O₃ cathode prepared by a novel solid-solution method for intermediate temperature solid oxide fuel cells

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