Since the demand for high power Li-ion batteries (LIBs) is increasing,spinel-structured lithium titanate, Li4Ti5O12 (LTO), as the anodematerial has attracted great attention because of its excellent cycleretention, good thermal stability, high rate capability, and so on. However, LTO shows relatively low conductivity due to empty 3dorbital of Ti4+ state. Nanoscale architectures can shorten electronconduction path, thus such low electronic conductivity can beovercome while Li+ can be easily accessed due to large surface area. Herein, three dimensional bicontinuous LTO electrodes were preparedvia close-packed self-assembly with polystyrene (PS) spheresfollowed by removal of them, which leads to no blockage of Li+ iontransportation pathways as well as fast electron conduction. 3Dbicontinuous LTO electrodes showed high-rate lithium storagecapability (103 mAh/g at 20 C), which is promising as the powersources that require rapid electrochemical response.
Since the demand for high power Li-ion batteries (LIBs) is increasing,spinel-structured lithium titanate, Li4Ti5O12 (LTO), as the anodematerial has attracted great attention because of its excellent cycleretention, good thermal stability, high rate capability, and so on. However, LTO shows relatively low conductivity due to empty 3dorbital of Ti4+ state. Nanoscale architectures can shorten electronconduction path, thus such low electronic conductivity can beovercome while Li+ can be easily accessed due to large surface area. Herein, three dimensional bicontinuous LTO electrodes were preparedvia close-packed self-assembly with polystyrene (PS) spheresfollowed by removal of them, which leads to no blockage of Li+ iontransportation pathways as well as fast electron conduction. 3Dbicontinuous LTO electrodes showed high-rate lithium storagecapability (103 mAh/g at 20 C), which is promising as the powersources that require rapid electrochemical response.