Raman spectroscopy has been used to study structural information is a vibrational technique which is very sensitive to the metallic oxidation state, and it is very suitable for electrode materials due to several characteristics; fast, nondestructive method, measurement of the same electrode and even on the same spot with various laser, and analysis using another techniques. Moreover, the Raman imaging technique is powerful tool to study the charge of structure, surface morphology, and phase transition accompanying crack propagation.

Here, we introduce Raman micro-spectroscopy installed at Advanced Nano-Surface Research Group in KBSI which is especially set up in glove box to measure various materials without air exposure, which can exhibit a sample from another surface contamination when exposure to atmosphere. Additionally, we designed and fabricated two types of electrochemical cells (plane cell and cross cell) developed for in situ Raman micro-spectroscopy for studying electrode materials in operating battery during battery operation. This approach simultaneously characterizes phase transition and facilitates uncovering the relationships between surface structure and activity during battery operation. This result provides a method for visualizing chemical structure of phase transition and the changed surface morphology.