Cycle Performance in Each State-of-Charge in LiMn2 O 4

摘要: Cycle performances at 55 C were examined for a cell using spinet-type of lithium manganese oxide as positive electrode in each five regions the state-of-charge. The results demonstrate that larger capacity losses are found two lowest voltage 0-20% and 20-40% states-of-charge smaller loss is observed higher region 60-80% By addition conductive material to after cycle, capacities recover any regions. our present work imply can he divided into major parts; one caused by deterioration active itself another poor conduction between collector. ratio former latter estimated ahout 1:2. A distinct correlation storage experiment constant potential arising from ective itself, only weaker admitted resulting conduction. would derived insulating substances formed reaction protonated with Li Mn ions, experiment. However, there no evidence connecting cause these lattice expansion oxide.