p-type LiCr0.33V0.33Mn0.33O2 semiconductor as a cathode electrode for high rate Li-ion batteries |
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| Affiliation: | 1. Physics Department, College of Sciences, Shiraz University, Shiraz 71946-84795, Iran;2. Institute of Nanotechnology, Shiraz University, Shiraz 71454, Iran;3. Department of Physics, Condensed Matter Lab, Shahid Chamran University, Ahvaz, Iran;1. University of Novi Sad, Faculty of Sciences, Department of Physics, Trg Dositeja Obradovića 4, 21000 Novi Sad, Serbia;2. University of Novi Sad, Faculty of Techical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia;3. Saint Petersburg State University, Department of Laser Chemistry and LaserMaterial Science, Universitetskii pr. 26, 198504 Saint Petersburg, Russia;1. Zavoisky Kazan Physical-Technical Institute, Sibirsky Tract 10/7, 420029 Kazan, Russia;2. Institute of Solution Chemistry, Akademicheskaya St. 1, 153045 Ivanovo, Russia;3. Kazan Federal University, Kremlyovskaya St. 18, 420008 Kazan, Russia;1. Duzce University Gumusova Vocational School, Department of Metallurgy, Gumusova, 81850 Duzce, Turkey;2. Sakarya University, Department of Metallurgy & Materials Engineering, 54187 Sakarya, Turkey;1. Physics Department, Faculty of Science, King Faisal University, PO Box 400, Al-Hassa 31982, Saudi Arabia;2. Physics Department, Faculty of Science, Assiut University, PO 71516, Assiut, Egypt;3. Physics Department, Faculty of Science & Arts Khulais, King Abdulaziz University, Jeddah, Saudi Arabia;4. Physics Department, Faculty of Science & Arts Khulais, University of Jeddah, Saudi Arabia;5. Physics Department, Faculty of Science, Al Azhar University, Assiut Branch, Assiut, Egypt |
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| Abstract: | Layered LiCr0.33V0.33Mn0.33O2 oxides have attracted attention as cathode materials for lithium ion batteries. These materials are good candidates to replace LiCoO2 used in the commercially available lithium ion batteries. In this study, a systematic work has been performed to investigate the structural and electrochemical behaviors of LiCr0.33V0.33Mn0.33O2 oxide structures via sol–gel method. In order to increase the conductivity, the surfaces of the as-synthesized LiCr0.33V0.33Mn0.33O2 oxide structures were coated with Cu via electroless deposition techniques. Powder X-ray diffraction (XRD) was performed on a Rigaku DMAX 2200 diffractometer (Cu Kα radiation, λ=1.5418 Å) between 10° and 90° (2θ) by steps of 0.02° (2θ) with a constant counting time of 10 s/step. Scanning electron microscopy (SEM) was carried out with a Jeol 6060 LV microscope. The electrochemical performances of the LiCr0.33V0.33Mn0.33O2 samples were measured in the 3.0–4.3 V potential range. Their discharge capacity reached 174 and 181 mA h g−1 at 1 C. This structural stability during the cycling combined with the obtained electrochemical features make these materials convenient for the lithium ion batteries applications. |
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| Keywords: | Li-ion batteries Sol–gel Electroless Cu coating |
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