A Study on the Relationship between Magnetic Properties and Charge/Discharge Mechanism of Cathode Materials Using Mossbauer Spectroscopy

摘要

The secondary battery industry is rapidly emerging as a new industry growth group to realize global eco-friendly policies and carbon neutrality. In particular, the cathode material, one of the main materials of secondary batteries, is a core material for the mobile, energy storage system (ESS), and electric vehicle industries. Therefore, the concept of cathode materials and oxidation/reduction reactions were introduced, and the magnetic properties of cathode materials were reviewed using Mossbauer spectroscopy. The charge/discharge mechanism is explained through the change of iron ions in the cathode material according to the charge/discharge process, the changes in the spectrum according to charge/discharge were also investigated through Mossbauer spectroscopy at low temperature. In addition to equipment for measuring electrochemical properties, the fusion of secondary batteries with equipment for measuring magnetic properties such as Mossbauer spectroscopy is expected to bring about the development of new cathode materials and secondary battery industries.