Ni-GDC and Ni-YSZ electrodes operated in solid oxide electrolysis and fuel cell modes
Ni-GDC and Ni-YSZ electrodes operated in solid oxide electrolysis and fuel cell modes
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DOI：
10.1299/jtst.2021jtst0013
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发表时间：
2021-01-01
影响因子：
1.2
通讯作者：
Shikazono, Naoki
中科院分区：
文献类型：
--
作者：
Sciazko, Anna;Shimura, Takaaki;Shikazono, Naoki
在本研究中，固体氧化物电池（soc）在发电（固体氧化物燃料电池，SOFC）模式和制氢（固体氧化物电解电池，SOEC）模式下运行。研究了用掺镍钆氧化铈（Ni-GDC）和镍钇稳定氧化锆（Ni-YSZ）复合材料制备燃料电极。讨论了微观结构变化与电化学性能退化之间的关系。Ni- gdc电极和Ni- ysz电极的Ni相降解机制相似。另一方面，陶瓷相的稳定性在两种电极材料之间存在显著差异。
In the present study, solid oxide cells (SOCs) were operated in the electricity generation (solid oxide fuel cell, SOFC) mode and the hydrogen production (solid oxide electrolysis cell, SOEC) mode. The fuel electrodes fabricated with nickel-gadolinia doped ceria (Ni-GDC) and nickel-yttria stabilized zirconia (Ni-YSZ) composites were investigated. The correlations between changes in the microstructure and degradation of electrochemical performance are discussed. The degradation mechanisms correlated with Ni phase were found to be similar for Ni-GDC and Ni-YSZ electrodes. On the other hand, the stability of the ceramic phase differs significantly between the two electrode materials.