| 高密度锂离子正极材料前驱体Ni_(0.8)Co_(0.2-x)Al_x(OH)_2的制备 |
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| 引用本文： | 汤宏伟,赵付双,常照荣,贾向前.高密度锂离子正极材料前驱体Ni_(0.8)Co_(0.2-x)Al_x(OH)_2的制备[J].河南师范大学学报(自然科学版),2009,37(1). |
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| 作者姓名： | 汤宏伟 赵付双 常照荣 贾向前 |
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| 作者单位： | 1. 河南师范大学,化学与环境科学学院,河南,新乡,453007
2. 河南师范大学,化学与环境科学学院,河南,新乡,453007;北京理工大学,化工与环境学院,北京,100080 |
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| 摘 要： | 采用二次干燥的化学共沉淀法制备出了Co-Al共掺杂的高密度锂离子电池正极材料前驱体Ni0.8Co0.2-xAlx(OH)2(X=0,0.05,0.1,0.15,0.2).研究了不同Co-Al的掺杂比例,NaOH溶液的浓度、滴定速率、烘干方式等因素对前驱体振实密度的影响.XRD分析表明,不同掺杂比例的Ni0.8Co0.2-xAlx(OH)2均为六方层状的β型结构,晶型结构规整.充放电测试表明以此前驱体与LiNO3反应制得的LiNi0.8Co0.15Al0.05O2材料具有良好的电化学性能.
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| 关 键 词： | 二次干燥法 化学共沉淀 Co-Al共掺杂 高密度 Ni0.8Co0.2-xAlx(OH)2 |
Preparation of High Density Ni_(0.8)Co_(0.2-x)Al_x(OH)_2 Used as Precursor for Cathode of Lithium Battery |
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| TANG Hong-wei,ZHAO Fu-shuang,CHANG Zhao-rong,JIA Xiang-qian.Preparation of High Density Ni_(0.8)Co_(0.2-x)Al_x(OH)_2 Used as Precursor for Cathode of Lithium Battery[J].Journal of Henan Normal University(Natural Science),2009,37(1). |
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| Authors: | TANG Hong-wei ZHAO Fu-shuang CHANG Zhao-rong JIA Xiang-qian |
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| Institution: | 1.College of Chemistry and Environmental Science;Henan Normal University;Xinxiang 453007;China;2.College of Chemical Engineering and Environmental;Beijing Institute of Technology;Beijing 100080;China |
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| Abstract: | Precursor-Ni0.8Co0.2-xAlx(OH)2 with high tapping density is prepared by second stage drying method.The effects of the proportion of Co-Al,the concentration of NaOH solution,velocity of titration,drying method etc.on the tapping density of Ni0.8Co0.2-xAlx(OH)2(X=0,0.05,0.1,0.15,0.2)are discussed.X-ray diffraction(XRD)reveals that the material is β-Ni0.8Co0.2-xAlx(OH)2 and has better structure on the whole.LiNi0.8Co0.15 Al0.05O2 powders is synthesized by sintering the Precursor with high tap density and LiNO3,electrochemical property tests testify that LiNi0.8Co0.15Al0.05O2 has good electrochemical performance. |
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| Keywords: | Ni0 8Co0 2-xAlx(OH)2 |
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