Effect of the Cooling Process on the Structure and Charge/Discharge Cycling Performance in LiLi_(0.20)Mn_(0.58)Ni_(0.18)Co_(0.04)O_2 Li-rich Solid-Solution Layered Oxide Cathode Materials for Li-Ion Battery

摘要

In this study, the cooling conditions for calcinated lithium-rich solid-solution layered oxide materials (LLOs) of Li[Li_(0.20)Mn_(0.58)Ni_(0.18)Co_(0.04)]O_2 were examined to determine the cooling conditions and crystal structure that produce a high and stable charging/discharging cathode capacity for LLOs. The crystal structures of LLO samples which were quenched in liquid nitrogen, cooled in air at room-temperature and at a controlled cooling rate of 100°C h~(-1) in a furnace were evaluated via powder X-ray diffractometry (pXRD) experiments and transmission electron microscopy (TEM). The evaluated crystal structures of the LLOs were related to the charging/discharging cycle cathode performance.