Electron transfer in LiMn1.5Ni0.5O4 during charging studied with soft X-ray spectrometry
| العنوان: | Electron transfer in LiMn1.5Ni0.5O4 during charging studied with soft X-ray spectrometry |
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| المؤلفون: | Ryosuke Okamoto, Masami Terauchi |
| المصدر: | Microscopy. 70:450-460 |
| بيانات النشر: | Oxford University Press (OUP), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Materials science, Spectrometer, Analytical chemistry, Ab initio, 02 engineering and technology, Electron, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Chemical state, Electron transfer, Structural Biology, Density of states, Radiology, Nuclear Medicine and imaging, Emission spectrum, Soft X-ray emission spectroscopy, 0210 nano-technology, Instrumentation |
| الوصف: | This is the first report on analyzing the chemical state of Li-ion battery electrodes at different states of charge by using a wavelength-dispersive spectrometer, which has a two-order improved energy resolution in the soft X-ray energy region compared with that of a conventional energy-dispersive X-ray analyzer. Electrodes containing LiMn1.5Ni0.5O4 were charged to prepare Li0.5Mn1.5Ni0.5O4 and λ-Mn0.75Ni0.25O2. The soft X-ray emission spectra obtained from those materials show that the O-K emission signal was drastically decreased throughout the charging process. This suggests that O-2p electron contributed to the electrochemical oxidation. The density of states and Bader charge evaluated from ab initio calculation support this result. |
| تدمد: | 2050-5701 2050-5698 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8892173f1cd166dacb6aed665d858fe5 https://doi.org/10.1093/jmicro/dfab014 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....8892173f1cd166dacb6aed665d858fe5 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20505701 20505698 |
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