Finding the Cause of Capacity Loss in a Metal-Oxide Battery Material

Scientists studying a lithium-ion battery with an iron-oxide electrode as it charged and discharged over 100 cycles found that the loss is due to a buildup of lithium oxide and decomposition of the medium through which lithium ions flow
Because of their high energy-storage density, materials such as metal oxides, sulfides, and fluorides are promising electrode materials for lithium-ion batteries in electric vehicles and other technologies. However, their capacity fades very rapidly. Now, scienti