[3A01-07] Topical symposium

11:40 AM - 12:10 PM JST(2:40 AM - 3:10 AM UTC)

[3A06【依頼講演】] X-ray Ptychography for Visualizing the Nanosturcutre and Chemical States of Battery Materials

*Nozomu Ishiguro¹ (1. Tohoku University (Japan))

In recent years, spectro-microscopic techniques using synchrotron X-rays have become increasingly important for visualizing the insertion and desorption reactions of electrons and ions in the real sample of battery materials. X-ray ptychography is one of the coherent X-ray diffractive imaging techniques, where the collected diffraction pattern set is reconstructed into real-space sample images by iterative phase retrieval calculation. We have recently focused on X-ray ptychography especially in the tender X-ray region. The tender X-ray contains the K-edge of P, S and Cl and the L-edges of 4d metals, which are important elements for various material systems. We have developed a new system in NanoTerasu BL10U, established in 2024, which provides higher brightness tender X-rays. In this study, we present case studies of battery materials by spectro-microscopic analysis as well as 3D visualization using computed tomography, using the hard and tender X-ray ptychography.

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