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Erschienen in:
21.12.2017
Facile synthesis of NH4V3O8 nanoflowers as advanced cathodes for high performance of lithium ion battery
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 6/2018
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Abstract
NH4V3O8 has been widely studied because of its attractive electrochemical performance, such as high theoretical capacity and long cycle life. However, the microscopic structure of materials has great influence on the physical and chemical properties of materials, especially the electrochemical performance. In this work, three-dimensional (3D) NH4V3O8 nanoflowers (NFs) have been prepared through a simple synthesis of solvothermal method. The result of X-ray diffraction confirms that the NFs were pure NH4V3O8. The nanocomposite could deliver a discharge capacity of 365 mAh g−1 at a current density of 15 mA g−1. Even after 50 cycles, a capacity of 304 mAh g−1 was still maintained. Moreover, it still maintained a high discharge capacity of 145 mAh g−1 at 300 mA g−1, indicating a promising applications as cathode material for LIBs. This high discharge capacity and cycleability is attributed to finer crystal grains and flower-like morphology of nano particles.