Advanced NASICON-type LiTi2(PO4)3 as electrode materials for lithium-ion batteries

Nanoparticle LiTi 2 (PO 4 ) 3 was prepared by solvothermal and calcination methods. LiTi 2 (PO 4 ) 3 -xh(x = 5, 7, 9, 13) was successfully synthesized under different calcination times in nitrogen atmosphere, and LiTi 2 (PO 4 ) 3 –7h showed excellent rate and electrochemical performance. It delivered discharge capacities of 141.2, 119.9, 109.8, 98.2, 87.3, and 76.7 mAh·g −1 at rates of 0.5, 1, 2, 5, 10, and 20C, respectively. In particular, its initial discharge capacity can reach 123.3 mAh·g −1 at the high rate of 10C. Hence, these superior properties demonstrate that LiTi 2 (PO 4 ) 3 –7h has great application advantages as a cathode for lithium-ion batteries.