Changes in the mechanical properties of support materials for segmented-in-series type solid oxide fuel cells as a function of time

作     者：Somekawa, T. Matsuzaki, Y. 

作者机构：Tokyo Gas Co Ltd Fundamental Technol Dept Tsurumi Ku Yokohama Kanagawa 2300045 Japan 

出 版 物：《JOURNAL OF POWER SOURCES》 (电源杂志)

年 卷 期：2014年第246卷

页      面：141-148页

核心收录：

学科分类：0820[工学-石油与天然气工程] 08[工学] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

主　　题：Solid oxide fuel cell Segmented-in-series Elastic modulus Insulating material 

摘      要：As the substrate materials for segmented-in-series type solid oxide fuel cells (SOFCs), the mechanical characteristics, such as Young s modulus, of Al2O3-NiO-YSZ, TiO2-NiO-YSZ and MgO-NiO-YSZ were examined under SOFC operating conditions. The Young s modulus for all of the samples decreased at a high temperature. For the Al2O3-NiO-YSZ samples, the behaviours of the Young s modulus changed at each process including as-sintered, 100 h reduction and 2000 h reduction. For the TiO2-NiO-YSZ samples, the Young s modulus behaviour varied between the as-sintered and reduced samples. However, further reduction did not change the behaviour of the Young s modulus. For the MgO-NiO-YSZ samples, the Young s modulus of the samples exhibited a nearly constant behaviour through the sequence of processes from as-sintered to 100 h reduction and 2000 h reduction. Based on the microstructural analysis, the compositions of the framework of the samples and the sliding of the grain boundary strongly affected the Young s modulus. (C) 2013 Elsevier B.V. All rights reserved.