Sonochemical synthesis of LiNi0.5Mn1.5O4 and its electrochemical performance as a cathode material for 5 V Li-ion batteries |
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| Institution: | 1. Rechargeable Battery Materials Group, National Institute for Materials Science, 1-1, Namiki, Tsukuba 305-0044, Japan;2. Department of Environmental Science & Technology, Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan;3. Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1, Minami-Ohsawa, Hachioji, Tokyo 192-0397, Japan |
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| Abstract: | LiNi0.5Mn1.5O4 was synthesized as a cathode material for Li-ion batteries by a sonochemical reaction followed by annealing, and was characterized by XRD, SEM, HRTEM and Raman spectroscopy in conjunction with electrochemical measurements. Two samples were prepared by a sonochemical process, one without using glucose (sample-S1) and another with glucose (sample-S2). An initial discharge specific capacity of 130 mA h g?1 is obtained for LiNi0.5Mn1.5O4 at a relatively slow rate of C/10 in galvanostatic charge–discharge cycling. The capacity retention upon 50 cycles at this rate was around 95.4% and 98.9% for sample-S1 and sample-S2, respectively, at 30 °C. |
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| Keywords: | Sonochemical synthesis Li-ion batteries Spinel Electrochemical properties |
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