ECCS B320
The ECCS B320 is an electro-chemical reaction visualizing confocal system that enables operand observation of lithium-ion batteries. It observes the electrode cross-section in real-time during charge/discharge cycles and visualizes the internal reactions of the battery.
With the real-color confocal optical system, it can observe color changes in electrode materials with high precision, providing important information for battery performance evaluation and research and development.
Analysis of electrochemical reaction distribution
The graphite anode goes through several different stages during charge and reaches SOC100% when the intercalation of lithium ions occurs between all layers. In the process, the color of active materials changes from grey to blue, red and finally gold. From these colors, you can analyze the electrochemical reaction distribution quantitatively.
The change of color seen in graphite anodes will not usually occur in cathodes, but you can quantitatively analyze the reaction distribution in cathodes by measuring small changes in brightness during charge/discharge.
From presentation at Battery Symposium in Japan 2017 (2A14)
The analysis of reaction distribution for both cathode and anode is possible at the same time-the former based on change in brightness and the latter based on change in hue.
