Low temperature synthesis of layered LiNiO2 cathode material in air atmosphere by ion exchange reaction |
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| Institution: | 1. School of Metallurgy and Environment, Central South University, Changsha 410083, PR China;2. Qing Hai Kuai Lv High-tech Co., Ltd, Xining 810008, PR China;3. Changsha Research Institute of Mining and Metallurgy, Changsha 410083, PR China;1. Energy Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Umezono, Tsukuba 305-8568, Japan;2. Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, PR China;3. Department of Chemistry, University of Illinois at Chicago, Chicago, IL 60607, United States;4. Graduate School of System and Information Engineering, University of Tsukuba, 1-1-1, Tennoudai, Tsukuba 305-8573, Japan |
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| Abstract: | The layered LiNiO2 cathode material for lithium ion battery was synthesized by ion-exchange reaction at low temperature in air atmosphere. The influence of synthesis conditions on the electrochemical performance of the resulting LiNiO2 was investigated. The LiNiO2 samples were characterized by X-ray powder diffraction (XRD), scanning electron microscope (SEM) and infrared (IR) analysis. The results indicate that low temperature fabricated LiNiO2 powders keep a single layered hexagonal structure and homogenous spheric shape like the raw material NiOOH. Charge and discharge tests show that the resultant LiNiO2 exhibits good electrochemical properties. The first charge and discharge capacities of the sample are 183.4 mA h g? 1 and 169.5 mA h g? 1 at 0.5 mA cm? 2, respectively. Galvanic charge/discharge and cyclic voltammetry tests reflect that LiNiO2 electrode exhibits good cycle reversibility. |
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