Spectroscopic X-ray Diffraction for Microfocus Inspection of Li-Ion Batteries
| Autor: | Koji Kitada, Yoshiharu Uchimoto, Haruno Murayama, Zempachi Ogumi, Katsutoshi Fukuda, Akio Mitsui, Koji Ohara, Eiichiro Matsubara, Hajime Arai |
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| Rok vydání: | 2014 |
| Předmět: |
Diffraction
Materials science Diffusion Resolution (electron density) Analytical chemistry Electrochemistry Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Ion General Energy law X-ray crystallography Monochromatic color Physical and Theoretical Chemistry Monochromator |
| Zdroj: | The Journal of Physical Chemistry C. 118:20750-20755 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp5029273 |
| Popis: | We developed spectroscopic X-ray diffraction (XRD) analysis to visualize electrochemical reactions occurring at various locations in Li-ion batteries (LIBs). Continuous irradiation with monochromatic X-rays in an energy region using a confocal setup provided a fixed observation position on the order of several tens of microns. Unlike three-dimensionally position sensitive XRD analyses, e.g., angle-scanning XRD and energy-dispersive XRD, this energy-scanning XRD analysis with angle-scanning of the monochromator instead of the detector-scanning has the advantage of profile resolution, position sensitivity, and time-resolution for mapping concentration gradients and diffusion of Li+ associated with the electrochemical properties of LIBs. The microscopic structural inhomogeneity in a sheet-like composite electrode of LiNi1/3Co1/3Mn1/3O2 with a thickness of 150 μm was successfully determined with a depth resolution of 50 μm during cell operation. This work demonstrates the potential of spectroscopic XRD as a n... |
| Databáze: | OpenAIRE |
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