Optical Microscopy

In recent years, researchers have found that optical imaging technology plays an important role in the electrochemical reactions of energy storage materials. Optical microscopy is helpful to understand the reaction behavior of the electrodes during charging and discharging and assists in the study of electrode failure mechanism, which further provides new ideas for the development of new high-performance electrode materials. The classical optical microscope ( OM ) is only a combination of optical elements and precision mechanical elements. After the improvement of television camera, charge-coupled device, and microcomputer, the OM has a complete image information acquisition system and processing system. This chapter focuses on the situ / in situ test of optical microscopy in energy storage materials, such as the analysis of dendritic growth mechanisms, mechanical changes of the electrode (particle cracking, particle movement, strains, and particle loss), and the chromatic phase transitions of lithiation graphite.