Wilson K.S. Chiu , Salvatore De Angelis , Peter Stanley Jørgensen , Luise Theil Kuhn
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引用次数: 0
Abstract
The article presents an overview on the progress of X-ray imaging of solid oxide cells (SOC) during the past decade. X-ray imaging has enabled significant advances in solid oxide cells. Laboratory-based X-ray sources allowed researchers to investigate the electrode porosity, different material phases, and its crystallography and grain boundaries. Synchrotron-based X-ray sources enable a more detailed understanding of the chemistry under in situ and operando conditions due to the significantly brighter source. Recent breakthroughs using synchrotron X-ray sources have allowed researchers to understand SOC performance and degradation at unprecedented spatial, chemical and temporal resolution using novel absorption contrast and XANES tomography, ptychographic and holographic X-ray tomography and 3-D X-ray diffraction imaging. Three-dimensional images have been used to advance numerical modeling and simulations, e.g., phase field models, lumped element models, and artificial structure generation. Machine learning and deep neural network algorithms are being explored for automated image segmentation. X-ray imaging has also been used to advance the creation of hierarchical electrode structures. Even though the theory and methods for X-ray imaging and analysis now exist, most studies still don’t take full advantage of this. Typical studies only use direct interpretation of images. As structures get more complicated, e.g., hierarchical structures, the quantitative interpretation of images will be needed to correlate structure to performance.
文章概述了过去十年固体氧化物电池(SOC)X 射线成像的进展。X 射线成像使固体氧化物电池取得了重大进展。基于实验室的 X 射线源让研究人员能够研究电极孔隙率、不同材料相、结晶学和晶界。由于同步辐射 X 射线源的亮度更高,因此可以更详细地了解原位和操作条件下的化学反应。利用同步辐射 X 射线源的最新突破,研究人员可以利用新型吸收对比和 XANES 层析成像、层析成像和全息 X 射线层析成像以及三维 X 射线衍射成像,以前所未有的空间、化学和时间分辨率了解 SOC 的性能和降解情况。三维图像已被用于推进数值建模和模拟,例如相场模型、叠加元素模型和人工结构生成。目前正在探索用于自动图像分割的机器学习和深度神经网络算法。X 射线成像还被用于推动分层电极结构的创建。尽管现在已经有了 X 射线成像和分析的理论和方法,但大多数研究仍未充分利用这一优势。典型的研究仅采用直接解读图像的方法。随着结构变得越来越复杂,例如分层结构,就需要对图像进行定量解读,以便将结构与性能联系起来。
期刊介绍:
Materials Today is the leading journal in the Materials Today family, focusing on the latest and most impactful work in the materials science community. With a reputation for excellence in news and reviews, the journal has now expanded its coverage to include original research and aims to be at the forefront of the field.
We welcome comprehensive articles, short communications, and review articles from established leaders in the rapidly evolving fields of materials science and related disciplines. We strive to provide authors with rigorous peer review, fast publication, and maximum exposure for their work. While we only accept the most significant manuscripts, our speedy evaluation process ensures that there are no unnecessary publication delays.