X‐ray absorption near‐edge structure (XANES) imaging is a powerful tool to visualize the chemical state distribution of transition‐metal‐based materials at synchrotron radiation facilities. In recent years, the electrochemical working rechargeable battery has been the most studied material in XANES imaging owing to the large increase of portable electronics and electric vehicles. This work acknowledges the importance of battery analysis and has developed the XANES imaging system on BL7C at Pohang Light Source‐II (PLS‐II). BL7C employs an undulator taper configuration to obtain an energy band >130 eV near the K‐absorption edge of the target element with a minimum energy interval >0.2 eV. While measuring energy‐dependent images, the zone plate translation maintains the best focus, and then various data processes such as background correction, image registration and clustering allow single XANES spectrum extraction and chemical distribution mapping. Here, the XANES imaging process is described, the XANES spectrum quality is identified and the chemical states of the partially charged cathode material used in lithium‐ion batteries as an application example are examined.

中文翻译：

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在PLS-II的BL7C上进行XANES纳米显微镜的开发

X射线吸收近边缘结构（XANES）成像是一种功能强大的工具，可以显示同步加速器辐射设施中过渡金属基材料的化学状态分布。近年来，由于便携式电子和电动车辆的大量增加，电化学工作可充电电池已成为XANES成像研究最多的材料。这项工作承认电池分析的重要性，并在浦项光源II（PLS-II）的BL7C上开发了XANES成像系统。BL7C采用起伏器锥度配置以在K附近获得> 130 eV的能带最小能量间隔> 0.2 eV的目标元素的吸收边缘。在测量与能量有关的图像时，区带平移保持最佳焦点，然后各种数据处理（例如背景校正，图像配准和聚类）允许进行单个XANES光谱提取和化学分布图绘制。这里描述了XANES成像过程，确定了XANES光谱质量，并检查了作为应用实例的锂离子电池中使用的部分充电正极材料的化学状态。