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▪ In the case of NCM (Ni, Co, Mn) cathode material most commonly used in industry, it shows different characteristics depending on the composition ratio of Co, Ni and Mn. However, various problems arise as the component content changes. The task of minimizing the occurrence of defects by strengthening thorough quality control as a matter of stability remains an important task.

▪ In general, studies have been conducted with a general electron microscope (SEM-EDS) to observe the ICP or component state that can be analyzed in the PPM unit for whether foreign matter is included, but in this case, only local areas that cannot represent the entire material are observed. This is possible and there are limitations to image analysis in the case of ICP. To compensate for these limitations, an electron microscope (Thermo Fisher Scientific model : Phenom ParticleX battery) suitable for automatically analyzing large-area particles was used. In this study, an efficient analysis method of battery materials is introduced by presenting a new observation method for quality inspection after mass production through the developed analysis method.