Elemental and Chemical Mapping of High Capacity Intermetallic Li-ion Anodes with Transmission X-ray Microscopy
| Autor: | Hernando J. Gonzalez Malabet, Yijin Liu, George J. Nelson, Joseph R. Buckley, Logan J. Ausderau, Vincent De Andrade |
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| Rok vydání: | 2017 |
| Předmět: |
Chemical imaging
Materials science Absorption spectroscopy Alloy General Engineering Analytical chemistry Intermetallic chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology Microstructure 01 natural sciences 0104 chemical sciences Anode chemistry engineering General Materials Science 0210 nano-technology Absorption (electromagnetic radiation) Tin |
| Zdroj: | JOM. 69:1478-1483 |
| ISSN: | 1543-1851 1047-4838 |
| DOI: | 10.1007/s11837-017-2416-5 |
| Popis: | X-ray nanotomography has been applied toward the three-dimensional (3D) imaging of a Li-ion battery alloy anode material (Cu6Sn5), and subsequent segmentation and analysis has been performed to distinguish the alloy material from its constituent components. Follow-on x-ray absorption near edge structure imaging was performed yielding absorption spectra for Cu, Cu6Sn5, and Li2CuSn. Analyses based on these spectra were performed on two-dimensional (2D) images of samples from cycled electrodes to assess chemical composition in Cu-containing phases. The capability to distinguish the different materials within mixed samples suggests that microstructure and composition changes resulting from lithiation and delithiation in Cu6Sn5 may be observed and better understood with 3D x-ray imaging methods. These methods are expected to be applicable to other intermetallic tin alloy electrodes. |
| Databáze: | OpenAIRE |
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