Microstructure and electrochemical properties of PrBaCo2O5+δ/Ce0.9Gd0.1O1.95 vertically aligned nanocomposite thin film as interlayer for thin film solid oxide fuel cells
Microstructure and electrochemical properties of PrBaCo2O5+δ/Ce0.9Gd0.1O1.95 vertically aligned nanocomposite thin film as interlayer for thin film solid oxide fuel cells
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DOI：
10.1016/j.electacta.2011.12.008
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发表时间：
2012-02-15
影响因子：
6.6
通讯作者：
Wang, Haiyan
中科院分区：
文献类型：
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作者：
Cho, Sungmee;Kim, Young Nam;Wang, Haiyan
采用脉冲激光沉积（PLD）技术在阴极和电解质之间制备了一层PrBaCo 2 O 5 +delta（PBCO）和Ce0.9Gd0.1O1.95（GDC）垂直排列的纳米复合材料（货车）.货车结构的PBCO/GDC薄膜在高沉积温度下在单晶SrTiO 3衬底上表现出高质量的外延生长。在PBCO和GDC垂直纳米柱之间也具有晶格匹配关系。发现具有货车夹层的对称电池在400 C下具有2.1 Ω cm 2的较低的面积比电阻（ASR），与没有夹层的电池相比（2.5 Ω cm（2））。用货车夹层制备的单电池的最大功率密度为151，263。和350 mW cm（-2），在750 ℃下开路电压（OCV）为0.88 V。PBCO/GDC货车中间层可以作为过渡层，其增强了TESOFC中阴极和电解质之间的粘附性并缓解了来自不同热膨胀系数（TEC）和晶格参数的应力。(C)2011爱思唯尔有限公司保留所有权利。
A thin layer of a vertically aligned nanocomposite (VAN) structure of PrBaCo2O5+delta (PBCO) and Ce0.9Gd0.1O1.95 (GDC) between the cathode and the electrolyte was demonstrated by a pulsed laser deposition (PLD) technique for thin film solid oxide fuel cells (TFSOFCs). The VAN structured PBCO/GDC thin film shows high quality epitaxial growth on single crystal SrTiO3 substrate at high deposition temperatures. It also has a lattice matching relation between the PBCO and GDC vertical nanocolumns. The symmetric cells with the VAN interlayer are found to have a lower area specific resistance (ASR) of 2.1 Q cm2 compared to that of the ones without the interlayer (2.5 Omega cm(2)) at 400 C. The maximum power density of the single cell prepared with the VAN interlayer was 151, 263. and 350 mW cm(-2), respectively, at 650, 700, and 750 degrees C with an open circuit voltage (OCV) of 0.88 V at 750 degrees C. The PBCO/GDC VAN interlayer could perform as a transition layer that enhances adhesion and relieves stress from different thermal expansion coefficients (TECs) and lattice parameters between the cathode and the electrolyte in TESOFCs. (C) 2011 Elsevier Ltd. All rights reserved.