New MTSC Design to Improve Charging Characteristics of NCM Cathode Materials

摘要

Recently, global demand on xEVs (HEV, PHEV, FEV) has been increased dramatically. The market for lithium-ion batteries (LIB) faces to new leap since these vehicles use the LIB as a power source. There are issues to be solved in LIB for xEV applications as the main powertrain is changed from the ICE to the LIB. One of the key issues is a charging time in the LIB which matches with fueling time in the conventional ICE. Most of researches have focused on negative electrode to enhance the charging characteristics of LIBs so far. The study on the positive electrode should be necessary to resolve this issue in the view of LIB system although the effect of negative electrode is more severe. In this study, multi-textured structural cathode (MTSC) is designed to enhance the charge capability of cathode materials for lithium-ion batteries. The design is realized with a MTSC cathode powder having a dual structure, which has a feature of dense core-porous surface. The shape of MTSC is dependent on the precursor synthesized by using of co-precipitation method. The MTSC and its precursor is evaluated with various evaluation methods. The details of results will be presented at the meeting.