La1-xSrxFe0.7Ni0.3O3-δ as both cathode and anode materials for Solid Oxide Fuel Cells

被引：27

作者：

Ben Mya, O. ^{[1
]}

dos Santos-Gomez, L. ^{[2
]}

Porras-Vazquez, J. M. ^{[2
]}

Omari, M. ^{[3
]}

Ramos-Barrado, J. R. ^{[4
]}

Marrero-Lopez, D. ^{[4
]}

机构：

[1] Univ El Oued, Dept Proc Engn & Petrochem, El Oued 39000, Algeria

[2] Univ Malaga, Dept Inorgan Chem, E-29071 Malaga, Spain

[3] Univ Biskra, Dept Matter Sci, Biskra 07000, Algeria

[4] Univ Malaga, Dept Appl Phys 1, E-29071 Malaga, Spain

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2017年 / 42卷 / 36期

关键词：

SOFC; Symmetric electrodes; LaFeO3; Exsolution; ELECTRODE MATERIAL; ELECTROCHEMICAL CHARACTERIZATION; CRYSTAL-STRUCTURE; IT-SOFC; MICROSTRUCTURE; LANI0.6FE0.4O3; BEHAVIOR; SYSTEM;

D O I：

10.1016/j.ijhydene.2017.07.150

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

La1-xSrxFe0.7Ni0.3O3-delta (x = 0, 0.1 and 0.2, LSFNx) are investigated as both cathode and anode materials for Solid Oxide Fuel Cells (SOFCs). The structure, microstructure and electrochemical properties of these materials are studied under oxidizing and reducing atmospheres. In air, the electrodes exhibit polarization resistance of 0.1 Omega cm(2) at 800 degrees C under open circuit voltage. In a H-2 atmosphere, Ni nanoparticles are exsolved on the surface, leading to a polarization resistance as low as 0.06 Omega cm(2) . A cell with a 350 mu m thick La0.9Sr0.1Ga0.8Mg0.2O3-delta electrolyte and LSFN electrodes generates a power output of 540 mWcm(-2) at 800 degrees C. Moreover, stable values of power density are obtained after successive oxidation/reduction cycles, confirming the reversibility of the electrodes. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

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页码：23160 / 23169

页数：10

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