Preparation and characterization of nano-crystalline LiNi0.5Co0.5VO4 by tartate precursor combustion method

Authors

• A. Phuruangrat ¹
• T. Thongtem ²
• S. Thongtem ³

1. Department of Materials Science and Technology, Faculty of Science,Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
2. Department of Chemistry, Faculty of Science, Chiang Mai University,Chiang Mai 50200, Thailand.
3. Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand.

Abstract

LiNi0.5Co0.5VO4 has been successfully synthesized by tartate precursor combustion method using Li2CO3, Co(NO3)2.6H2O, Ni(NO3)2.6H2O and NH4VO3 as a starting materials in deionized water with the subsequent calcination at 450-600 oC for 12 h. The combustion and decomposition of tartate precursor were studied by TGA and compared with tartaric acid. It found weight loss at 50-450 oC. The product showed a inverse spinel LiNi0.5Co0.5VO4 which confirmed by PXRD. The crystal and particle sizes improved when calcination temperature was increased. Raman and FITR were studied the vibration of product. They detected V-O stretching in VO4 tetrahedron, Li-O bending in LiO6 octahedron and Li-O-M (M = Ni and Co) stretching. The TEM showed morphologies that composed nano-particle of LiNi0.5Co0.5VO4.

Keywords

• Lithium ion batteries
• LiNi0.5Co0.5VO4
• Polymerization complex
• Cathode material