HE Yong, TANG Zi-Long, ZHANG Zhong-Tai
1. Pell,W. G.; Conway,lithium insertion cycling tests showed excellent cycling stability and an improved rate capability. The capacity of the first cycle was 288 mAh·g-1, and over 145 mAh·g-1 capacity remained after 120 cycles at 150 mA·g-1. At a current of 1500 mA·g-1, the capacity of the first cycle was 178 mAh·g-1. Over 80 mAh·g-1 capacity remained after 600 cycles at 1500 mA·g-1; furthermore, the capacity could come back to 150 mAh·g-1 at 150 mA·g-1 after 600 cycles at 1500 mA·g-1, which was close to the result for the cell that was immediately discharged/charged at 150 mA·g-1. The Cr2O3 particles, as the second phase, can improve the structural stability and high-rate capability of the H2Ti2O5·H2O nanotubes. These novel one-dimensional nanostructured materials may find promising applications in lithium-ion batteries and in electrochemical cells.