Effect of Fe-doping followed by C+SiO2 hybrid layer coating on Li3V2(PO4)3 cathode material for lithium-ion batteries |
| |
| Affiliation: | 1. College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, 8 Daxue Road, Yichang, Hubei, 443002 China;2. School of Materials Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei, 430074 China;3. Department of Physics, Sam Houston State University, Huntsville, TX, 77341 USA;1. School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China;2. Jiangsu Laboratory of Advanced Functional Material, Changshu Institute of Technology, Changshu 215500, China;1. School of Materials Science and Engineering, Key Laboratory of Processing and Testing Technology of Glass & Functional Ceramics of Shandong Province, Qilu University of Technology, Jinan 250353, PR China;2. Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, PR China;1. College of Mechanical and Material Engineering, Three Gorges University, 8 Daxue Road, Yichang Hubei 443002, PR China;2. Key Laboratory for Advanced Battery Materials and System, Ministry of Education, School of Materials Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, PR China;3. Department of Physics, Sam Houston State University, Huntsville, TX 77341, USA;4. Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA;5. NSLS, Brookhaven National Laboratory, Upton, NY 11973, USA |
| |
| Abstract: | A novel Li3V2(PO4)3 composite modified with Fe-doping followed by C+SiO2 hybrid layer coating (LVFP/C-Si) is successfully synthesized via an ultrasonic-assisted solid-state method, and characterized by XRD, XPS, TEM, galvanostatic charge/discharge measurements, CV and EIS. This LVFP/C-Si electrode shows a significantly improved electrochemical performance. It presents an initial discharge capacity as high as 170.8 mA h g−1 at 1 C, and even delivers an excellent initial capacity of 153.6 mA h g−1 with capacity retention of 82.3% after 100 cycles at 5 C. The results demonstrate that this novel modification with doping followed by hybrid layer coating is an ideal design to obtain both high capacity and long cycle performance for Li3V2(PO4)3 and other polyanion cathode materials in lithium ion batteries. |
| |
| Keywords: | Lithium ion battery Lithium vanadium phosphate Fe-doping Hybrid layer coating |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
