| 热处理温度对溶胶凝胶法制备LiNi0.5Mn1.5O4电化学性能的影响 |
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| 引用本文： | 常龙娇,刘佳囡,刘连利. 热处理温度对溶胶凝胶法制备LiNi0.5Mn1.5O4电化学性能的影响[J]. 人工晶体学报, 2017, 46(11): 2290-2294 |
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| 作者姓名： | 常龙娇 刘佳囡 刘连利 |
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| 作者单位： | 渤海大学新能源学院,锦州,121013 |
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| 基金项目： | 国家自然科学基金(5140040053) |
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| 摘 要： | 在传统溶胶凝胶法的基础上,通过高温热处理LiNi0.5Mn1.5O4前驱体,合成了高性能的LiNi0.5Mn1.5O4材料.通过X射线衍射仪测试材料的结构,经过超高温热处理后,获得了晶体发育完好的LiNi0.5Mn1.5O4.经电化学测试,高温热处理显著提高了材料的循环性能.经过900℃处理的LiNi0.5Mn1.5O4首次充放电容量达到123 mAh/g,在1C倍率下循环一百次以后容量仍在121.6 mAh/g左右,容量保持率达到98.9;,高温热处理显著的改善了材料的循环性能.
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| 关 键 词： | 锂离子电池 溶胶凝胶法 正极材料 LiNi0.5Mn1.5O4 超高温热处理, |
Effect of Sintering Temperature on the Electrochemical Properties of the LiNi0.5Mn1.5O4 Synthesized by Sol-gel Method |
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| CHANG Long-jiao,LIU Jia-nan,LIU Lian-li. Effect of Sintering Temperature on the Electrochemical Properties of the LiNi0.5Mn1.5O4 Synthesized by Sol-gel Method[J]. Journal of Synthetic Crystals, 2017, 46(11): 2290-2294 |
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| Authors: | CHANG Long-jiao LIU Jia-nan LIU Lian-li |
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| Abstract: | The high-capability LiNi0.5Mn1.5O4 was synthesized by using high temperature to roast the precursor of the traditional sol-gel method.The crystal structure was tested by X-ray diffraction.The structure of the samples which was roasted at high temperature was perfect.The cycle capability was significantly improved after being roasted at high temperature.The first charge-discharge capacity of the sample which is roasted at 900 ℃ is about 123 mAh/g and it is 121.6 mAh/g after circulated 100 cycles at 1 C and the rate of capacity retention is 98.9;.The cycle capability was improved obviously after being roasted at high temperature. |
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