Visualizing internal micro-damage distribution in solid oxide fuel cells
Visualizing internal micro-damage distribution in solid oxide fuel cells
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固体氧化物燃料电池内部微损伤分布的可视化
DOI：
10.1016/j.jpowsour.2023.233059
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发表时间：
2023
影响因子：
9.2
通讯作者：
Kawada Tatsuya
中科院分区：
文献类型：
--
作者：
Sato Kazuhisa;Yabuta Yoshie;Kumada Keigo;Fukui Ken-ichi;Numao Masayuki;Kawada Tatsuya
对全固态功率器件中各元器件之间的键合状态进行无损评估，对于保证器件的性能和可靠性具有重要意义。然而，全固态功率器件组件的厚度范围为10至100 μm，其面积范围为10至100 cm 2。此外，只有少数几种方法可以定量观察大面积的多层界面，如在全固态功率器件中，具有高的空间分辨率。在这项研究中，我们研究了使用太赫兹波，这是非常渗透的氧化物，在固体氧化物燃料电池（SOFC），这是全固态功率器件，以评估组件之间的界面分层。具体地，评价由阳极/电解质/中间层/阴极组成的阳极支撑SOFC的阴极/中间层界面的完整性。使用自组织映射，信息技术的方法，得到的信号进行分类，然后与直接观察的标本横截面。分类后的太赫兹波信号与观测结果吻合较好。值得注意的是，这是第一次太赫兹波已被用来定量评估全固态功率器件的界面分层。
Non-destructive evaluation of the bonding state between the components of all-solid-state power devices is important to ensure their performance and reliability. However, the thickness of all-solid-state power device components ranges from 10 to 100 μm, and their area ranges from 10 to 100 cm2. Furthermore, there are only a few methods for quantitatively observing large-area multi-layered interfaces, such as those in all-solid-state power devices, with a high spatial resolution. In this study, we investigated the use of terahertz waves, which are extremely permeable to oxides, in solid oxide fuel cells (SOFC), which are all-solid-state power devices, to evaluate the delamination of the interface between components. Specifically, the integrity of the cathode/intermediate layer interface of an anode-supported SOFC consisting of an anode/electrolyte/intermediate layer/cathode was evaluated. The obtained signals were classified using a self-organizing map, an information technology method, and then compared with the direct observation of the specimen cross-section. The classified terahertz wave signals and observation results were found to be in good agreement. Notably, this is the first time that terahertz waves have been used to quantitatively evaluate the interface delamination of all-solid-state power devices.