无机材料学报2017，Vol.32Issue(3)：235-240,6.DOI:10.15541/jim20160340
基于Pr0.6Sr0.4Co0.2Fe0.8O3-δ对称固体氧化物燃料电池的性能优化研究
Improved Performance of Symmetrical Solid Oxide Fuel Cells with Redox-reversible Pr0.6Sr0.4Co0.2Fe0.8O3-δElectrodes
摘要
Abstract
Pr0.6Sr0.4Co0.2Fe0.8O3-δ(PSCF) and Gd0.2Ce0.8O2-δ(GDC) powders were synthesized by a citric acid- ni-trates self-propagating combustion method, and La0.9Sr0.1Ga0.8Mg0.2O3-δ(LSGM) electrolyte powder was prepared by conventional solid state reaction process. The LSGM-supported symmetrical solid oxide fuel cell of PSCF│GDC│LSGM│GDC│PSCF with GDC function layer was fabricated. The phase structure, chemical compatibility, polarization resistance, cross-section microstructure and the cell performance were investigated by X-ray diffraction (XRD), electrochemical impedance spectra, scanning electron microscope (SEM) and self-assembly SOFC test sys-tem, respectively. The results indicate that PSCF powder exhibits a single perovskite with cubic symmetry and a good redox reversibility. The GDC function layer dramatically improve the chemical compatibility among PSCF, LSGM in hydrogen and the cell performance. The area specific resistance (ASR) of PSCF│GDC decreased from6.892?·cm2 to 0.314?·cm2 in hydrogen at 800℃ and the maximum power density increased from 269 mW/cm2 to 463 mW/cm2 using humidified hydrogen (3%H2O) as fuel and ambient air as oxidant. The results indicate that PSCF is a promising electrode material for symmetrical solid oxide fuel cells, and GDC function layer is a potential way to enhance the long-term stability.关键词
对称固体氧化物燃料电池/氧化–还原可逆性/Pr0.6Sr0.4Co0.2Fe0.8O3-δ/GDC功能层Key words
symmetrical solid oxide fuel cell/redox reversibility/Pr0.6Sr0.4Co0.2Fe0.8O3-δ/GDC function layer分类
化学化工引用本文复制引用
杨洋,田冬,丁岩芝,卢肖永,林彬,陈永红..基于Pr0.6Sr0.4Co0.2Fe0.8O3-δ对称固体氧化物燃料电池的性能优化研究[J].无机材料学报,2017,32(3):235-240,6.基金项目
国家自然科学基金(51102107, 51202080) （51102107, 51202080）
安徽省自然科学基金(1408085MKL43) National Natural Science Foundation of China (51102107, 51202080) （1408085MKL43）
Anhui Provincial Natural Science Foundation (1408085MKL43) （1408085MKL43）
