Layered oxygen-deficient double perovskite GdBaFe2O5+delta as electrode material for symmetrical solid-oxide fuel cells

Zhang, Ying1; Niu, Bingbing2; Hao, Xiaohui1; Wang, Yaowen1; Liu, Jincheng1; Jiang, Panpan1; He, Tianmin1

2021-02-20

10.1016/j.electacta.2021.137807

ELECTROCHIMICA ACTA   影响因子和分区

0013-4686

1873-3859

A highly efficient and stable catalyst is critically required for simultaneous oxygen reduction and fuel oxidation in symmetrical solid-oxide fuel cells (SSOFCs). Herein, a novel material named as layered oxygen deficient double perovskite GdBaFe2O5+delta (GBFO; delta = 0.25 and 0.5) for SSOFC electrodes was synthesized in oxidizing and reducing atmospheres and exhibited excellent structural stability under cathode and anode conditions. La0.9Sr0.1Ga0.8Mg0.2O3-delta (LSGM) and Ce0.8Sm0.2O1.9 (SDC) were used as electrolyte and buffer layer, respectively. The polarization resistance values of the GBFO electrodes on LSGM electrolytes were as low as 0.054 and 0.974 Omega cm(2) at 850 degrees C in air and H-2, respectively. The maximum power densities obtained from a cell with the configuration of GBFO/SDC/LSGM (200 mu m)/SDC/GBFO were 1053, 868, and 197 mW cm(-2) at 850 degrees C with H-2 , wet syngas, and wet CH4 as fuel, respectively. The formation mechanism of oxygen vacancies and the structural stability of GBFO were also analyzed and discussed. GBFO showed good electrochemical stability and resistance to carbon deposition based on a 120-hour test with wet CH4 as fuel. These findings indicate the potential use of this material in SSOFCs running on hydrocarbon fuels. (C) 2021 Elsevier Ltd. All rights reserved.

Symmetrical solid oxide fuel cell Double perovskite electrode Stability Electrochemical performance

SCI ; EI

英语

其他

National Natural Science Foundation of China[91745203] ; Jilin Provincial Science and Technology Department[20180101073JC]

Electrochemistry

Electrochemistry

WOS:000623414800004

PERGAMON-ELSEVIER SCIENCE LTD

20210509844075

Anodes ; Barium compounds ; Buffer layers ; Cathodes ; Cerium compounds ; Electrolytic reduction ; Gadolinium compounds ; Iron compounds ; Oxygen vacancies ; Perovskite ; Samarium compounds ; Solid oxide fuel cells (SOFC) ; Stability

Minerals:482.2 ; Ore Treatment:533.1 ; Fuel Cells:702.2 ; Electron Tubes:714.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Crystalline Solids:933.1

CHEMISTRY

Web of Science

1.Jilin Univ, Minist Educ, Key Lab Phys & Technol Adv Batteries, Coll Phys, Changchun 130012, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China

Zhang, Ying,Niu, Bingbing,Hao, Xiaohui,et al. Layered oxygen-deficient double perovskite GdBaFe2O5+delta as electrode material for symmetrical solid-oxide fuel cells[J]. ELECTROCHIMICA ACTA,2021,370.

Zhang, Ying.,Niu, Bingbing.,Hao, Xiaohui.,Wang, Yaowen.,Liu, Jincheng.,...&He, Tianmin.(2021).Layered oxygen-deficient double perovskite GdBaFe2O5+delta as electrode material for symmetrical solid-oxide fuel cells.ELECTROCHIMICA ACTA,370.

Zhang, Ying,et al."Layered oxygen-deficient double perovskite GdBaFe2O5+delta as electrode material for symmetrical solid-oxide fuel cells".ELECTROCHIMICA ACTA 370(2021).