Hydrothermal synthesis of Cu-3(OH)(2)V2O7 center dot nH(2)O nanoparticles and its application in lithium ion battery

作者：Ni, Shibing^*; He, Deyan; Yang, Xuelin; Li, Tao

来源：Journal of Alloys and Compounds, 2011, 509(8): L142-L144.

DOI：10.1016/j.jallcom.2010.12.139

• Copper vanadium oxide hydroxide hydrate
• Raman spectrum
• Thermal analysis
• Lithium ion battery

Well crystallized copper vanadium oxide hydroxide hydrate (Cu-3(OH)(2)V2O7 center dot nH(2)O) nanoparticles have been successfully synthesized by a simple hydrothermal method. The morphology and structure of the as-synthesized products were characterized by field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Raman spectroscopy. The composition of Cu-3(OH)(2)V2O7 center dot nH(2)O was studied by thermal analysis (TG, DTA), which indicates that there are two molecules of water in a Cu-3(OH)(2)V2O7 center dot nH(2)O molecular formula. Electrochemical properties of Cu-3(OH)(2)V2O7 center dot 2H(2)O nanoparticles as positive electrode of lithium ion battery were studied by conventional charge/discharge tests at different current density, showing steady initial discharge platforms near 1.7 V. The first discharge capacity of Cu-3(OH)(2)V2O7 center dot 2H(2)O electrode arrives at 868 and 845 mAh g(-1) at current density of 0.01 and 0.02 rnA cm(-2), respectively.

• 出版日期2011-2-24
• 单位兰州大学; 三峡大学