Electrochemical Properties of Fe_2O_3/Ga_2O_3 Composite Electrodes for Lithium-ion Batteries

摘要

Fe_2O_3/Ga_2O_3 composite and GaFeO_3 electrodes worked as rechargeable electrode materials for lithium-ion batteries, whereas their capacities were gradually decreased with increasing of cycle number. The initial Li insertion capacities (cut-off voltage: 0.01 V) were 1643 mAh/g for Fe_2O_3/Ga_2O_3 composite and 1196 mAh/g for GaFeOs, respectively. Despite same Fe/Ga atomic ratio, Fe_2O_3/Ga_2O_3 composite showed a higher capacity than that of GaFeO_3 over the 50 cycles.