Local state of charge measurement on a Li battery by X -ray photon counting computed tomography

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-09-26 DOI:10.1016/j.nimb.2024.165537

Hiroshi Sakurai , Kazushi Hoshi , Daiki Watabe , Kosuke Suzuki , Yuki Hasebe , Shunta Suzuki , Yumiko Ohno , Masami Torikoshi

引用次数: 0

Abstract

X-ray attenuation coefficient images of CR1025 Li batteries at several energies were measured using a photon counting computed tomography (PCCT) system. From the X-ray attenuation coefficient images at several energies, effective density and effective atomic number images were obtained for material identification. Furthermore, local state of charge (SOC) of the battery was estimated in the fresh and discharged states from the analysis of the measured X-ray attenuation coefficient images. We found inhomogeneous local SOC distribution in the discharged state. This study shows the possibility of the PCCT system as a new nondestructive testing (NDT) technology for Li ion rechargeable batteries such as in electric vehicles.

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利用 X 射线光子计数计算机断层扫描测量锂电池的局部电荷状态

使用光子计数计算机断层扫描（PCCT）系统测量了 CR1025 锂电池在多个能量下的 X 射线衰减系数图像。从几种能量下的 X 射线衰减系数图像中获得了有效密度和有效原子序数图像，用于材料鉴定。此外，通过分析测得的 X 射线衰减系数图像，还估算出了电池在新鲜和放电状态下的局部电荷状态（SOC）。我们发现放电状态下的局部 SOC 分布不均匀。这项研究表明，PCCT 系统有可能成为电动汽车等锂离子充电电池的一种新的无损检测 (NDT) 技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.