A voltage‐applicable heating specimen holder is developed to observe solid oxide fuel cells (SOFCs) in an environmental transmission electron microscope. An SOFC specimen can be heated and has a voltage applied in an oxygen gas atmosphere using the holder. Oxygen ion migration and redox reactions in the specimen could also be realized. The heating unit, which consists of nickel–chromium alloy mounted on the tip of the developed specimen holder, can heat the specimen up to 1200 K in an oxygen gas atmosphere. A specimen preparation method for the SOFC structure is also established using a focused ion beam technique. The holder has high stability for high‐resolution imaging and electron energy loss spectroscopy under the in situ condition. The mechanical and electrical stabilities are estimated from high‐resolution images and electron energy loss spectra of the heated and voltage‐applied specimen in an oxygen gas atmosphere. The developed holder is a powerful tool to reveal the microstructural and electronic structural changes that occur by electrochemical reactions at the interfaces of an SOFC.

中文翻译：

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开发了一种可施加电压的加热样品架，用于使用环境透射电子显微镜现场观察固体氧化物燃料电池

开发了一种可施加电压的加热样品支架，以在环境透射电子显微镜中观察固体氧化物燃料电池（SOFC）。使用支架可以加热SOFC样品并在氧气气氛中施加电压。样品中的氧离子迁移和氧化还原反应也可以实现。加热单元由镍铬合金组成，该镍铬合金安装在已开发的样品支架的尖端，可在氧气气氛中将样品加热至1200K。还使用聚焦离子束技术建立了SOFC结构的样品制备方法。该固定器在原位条件下对高分辨率成像和电子能量损失谱具有很高的稳定性。机械和电气稳定性是根据在氧气气氛中加热并施加电压的样品的高分辨率图像和电子能量损失谱估算的。开发的支架是一种强大的工具，可以揭示SOFC界面处的电化学反应引起的微观结构和电子结构变化。