Revealing Three-Dimensional Morphology in Nanoporous Gold Using Three-Dimensional X-Ray Fresnel Coherent Diffractive Imaging Tomography
| العنوان: | Revealing Three-Dimensional Morphology in Nanoporous Gold Using Three-Dimensional X-Ray Fresnel Coherent Diffractive Imaging Tomography |
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| المؤلفون: | Sang Soo Kim, Ian McNulty, Xianghui Xiao, Chonghang Zhao, M. A. Pfeifer, Garth J. Williams, Yu-chen Karen Chen-Wiegart, David Vine |
| المصدر: | Journal of Electrochemical Energy Conversion and Storage. 17 |
| بيانات النشر: | ASME International, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Renewable Energy, Sustainability and the Environment, Nanoporous, business.industry, Mechanical Engineering, X-ray, Energy Engineering and Power Technology, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Three dimensional morphology, Optics, Mechanics of Materials, Tomography, 0210 nano-technology, business |
| الوصف: | Nanoporous metals fabricated by dealloying have a unique bi-continuous, sponge-like porous structure with ultra-high surface area. The unique properties of these materials, especially nanoporous gold, have numerous potential applications in sensors and actuators and in energy-related applications such as catalytic materials, super-capacitors, and battery supports. The degree of porosity and size of the metal ligaments are critical parameters that determine many properties and thus govern the functionalities of nanoporous metals in many applications including energy storage and conversion. We used Fresnel coherent diffractive imaging combined with tomographic reconstruction to quantify the nanoscale three-dimensional spatial distribution and homogeneity of the porosity and ligament size within a bulk sample of nanoporous gold. The average porosity and its standard deviation along the axial direction through the sample were determined, as well as the characteristic feature size and its standard deviation. The result shows that free corrosion is an effective way to create homogeneous nanoporous metals with sample sizes on the order of 1 µm. |
| تدمد: | 2381-6910 2381-6872 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::57803d1283973ffe29e9bc1932c1ec8e https://doi.org/10.1115/1.4046414 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........57803d1283973ffe29e9bc1932c1ec8e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 23816910 23816872 |
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