Ultrafine LiMn_2O_4/carbon nanotube nanocomposite with excellent rate capability and cycling stability for lithium-ion batteries

摘要

Ultrafine LiMn_2O_4/carbon nanotube (CNT) nanocomposite is synthesized by a one-step hydrothermal treatment. In the nanocomposite, LiMn_2O_4 nanoparticles of 10-20 nm in diameters are well crystallized and uniformly distributed in the CNT matrix. The CNTs not only provide a conductive matrix, facilitating fast electron transport, but also effectively reduce agglomeration of LiMn_2O_4 nanoparticles. The nano-LiMn_2O_4/CNT nanocomposite exhibits superior rate capability and cycling stability compared with the sol-gel synthesized LiMn_2O_4, making it promising for high-power applications.