[Analysis Case] Atomic Resolution Analysis of Lithium-Ion Secondary Battery Cathode Materials
Atmosphere control + atomic-level observation under cooling
In MST, atomic-level TEM analysis is possible under atmosphere control (and cooling). This document presents a case where LiCoO2 particles, extracted from a lithium-ion secondary battery without exposure to the atmosphere, were processed using FIB and analyzed with TEM under atmosphere control and cooling. STEM observation and EDX analysis were conducted while cooling to -174°C, allowing for a visual confirmation of the atomic arrangement. This method can be applied to materials with low thermal stability and crystalline materials that undergo changes in the atmosphere for high-resolution analysis.
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Applications/Examples of results
This is a case study of secondary batteries.