High‐Performance Ni ‐SDC Cermet Anode for Solid Oxide Fuel Cells at Medium Operating Temperature
High‐Performance Ni ‐SDC Cermet Anode for Solid Oxide Fuel Cells at Medium Operating Temperature
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用于中等工作温度固体氧化物燃料电池的高性能 Ni-SDC 金属陶瓷阳极
DOI：
10.1149/1.1390684
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发表时间：
1999
影响因子：
--
通讯作者：
J. Fujita
中科院分区：
文献类型：
--
作者：
R. Maric;S. Ohara;T. Fukui;T. Inagaki;J. Fujita
采用喷雾热解法制备了一种钐掺杂氧化铈（SDC）-NiO复合粉体，并将其作为中温（800 ℃）固体氧化物燃料电池（SOFC）的阳极材料。制备了Ni-SDC金属陶瓷电极，期望它们的混合导电性质能够提高电极反应速率，提高SOFC的运行效率。在这项研究中，通过改变烧结温度从1200到1400 C获得不同的显微结构。阳极的微观结构对阳极极化有很大的影响。在1300 ℃、200 mA/cm 2电流密度下烧结的样品的最低阳极极化约为30 mV。这种高性能似乎是由于微观结构，其中Ni颗粒形成骨架，良好连接的SDC颗粒精细地分布在Ni颗粒表面上。S1099-0062（98）05-031-7。All rights reserved.
A samaria-doped ceria (SDC)-NiO composite powder produced by spray pyrolysis (SP) was employed as the anode material for medium-temperature (800 C) solid oxide fuel cells (SOFC). Ni-SDC cermet electrodes were prepared with the expectation that their mixed conducting nature would enhance the electrode reaction rate and improve the operation efficiency of the SOFC. In this study, different microstructures were obtained by varying the sintering temperature from 1200 to 1400 C. The anodic polarization was strongly influenced by the microstructure of the anode. The lowest anode polarization of the samples sintered at 1300 C for a current density of 200 mA/cm2 was about 30 mV. This high performance seems to be due to the microstructure, in which Ni particles form a skeleton with well-connected SDC particles finely distributed over the Ni particle surfaces.© 1998 The Electrochemical Society. S1099-0062 (98) 05-031-7. All rights reserved.