A Li3V2(PO4)3/C thin film with high rate capability as a cathode material for lithium-ion batteries |
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| Authors: | Long Wang Lin-Chao Zhang Ingo Lieberwirth Hong-Wei Xu Chun-Hua Chen |
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| Affiliation: | 1. CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, Anhui, Hefei 230026, China;2. Max Planck Institute for Polymer Research, Mainz 55128, Germany |
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| Abstract: | A monoclinic lithium vanadium phosphate (Li3V2(PO4)3) and carbon composite thin film (LVP/C) is prepared via electrostatic spray deposition. The film is studied with X-ray diffraction, scanning and transmission electron microscopy and galvanostatic cell cycling. The LVP/C film is composed of carbon-coated Li3V2(PO4)3 nanoparticles (50 nm) that are well distributed in a carbon matrix. In the voltage range of 3.0–4.3 V, it exhibits a reversible capacity of 118 mA h g?1 and good capacity retention at the current rate of 1 C, while delivers 80 mA h g?1 at 24 C. These results suggest a practical strategy to develop new cathode materials for high power lithium-ion batteries. |
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