Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1625011 | Journal of Alloys and Compounds | 2008 | 5 Pages |
Abstract
Spherical LiVMoO6 nanocrystals as cathode for lithium ion batteries were synthesized using a solvothermal reaction method. Powder XRD data indicate that a single phase LiVMoO6 with brannerite-type structure is obtained at 550 °C by the thermal treatment of the precursor for 6 h. SEM image shows that the particles are composed of loosely stacked spheres with a uniform particle size about 40 nm. The electrode properties of LiVMoO6 have also been studied by galvanostatic cycling and ac impedance spectroscopy. LiVMoO6 nanospheres delivered 172 mAh gâ1 capacity in the initial discharge process with a reversible capacity retention of 94.4% after 100 cycles in the range of 3.6-1.80 V versus metallic Li at a current density of 100 mA gâ1. The microstructure developed in the electrodes give evidence that the particle size and morphological properties play an important role in the much improved capacity and cycling stability at large currents than ordinary samples.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Liqun Zhou, Yongguang Liang, Ling Hu, Xiaoyan Han, Zonghui Yi, Jutang Sun, Shuijin Yang,