| 层状Li1.3Ni0.35Mn0.65O2.3锂离子电池正极材料制备与表征 |
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| 引用本文： | 王元瑞,张红雷,孙琦,梁奇,刘凤娟,强国俊.层状Li1.3Ni0.35Mn0.65O2.3锂离子电池正极材料制备与表征[J].电源技术,2012,36(2):161-164. |
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| 作者姓名： | 王元瑞 张红雷 孙琦 梁奇 刘凤娟 强国俊 |
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| 作者单位： | 1. 长春工业大学化学工程学院,吉林长春,130012
2. 青岛乾运高科新材料有限公司,山东青岛,266111 |
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| 基金项目： | 吉林省教育厅"十二五"科研规划项目 |
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| 摘 要： | 通过共沉淀法制备了Ni0.35Mn0.65(OH)2,并与碳酸锂混合,经高温煅烧得到层状Li1.3Ni0.35Mn0.65O2.3。通过XRD(X射线衍射)、SEM(扫描电子显微镜)和电化学性能测试对所得样品进行了表征。考察了烧结温度和烧结时间对材料的结构和电化学性能的影响。结果表明,在优化条件下合成的正极材料具有很好的α-NaFeO2型层状结构,粒度分布均匀,形貌呈球形。以0.1 C的电流在2.0～4.6 V充放电时,放电比容量达180～220 mAh/g,同时具有良好的循环可逆性能。
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| 关 键 词： | 锂离子电池 Li1.3Ni0.35Mn0.65O2.3 正极材料 电化学性能 |
Synthesis and characterization of Li1.3Ni0.35Mn0.65O2.3with layered structure as positive material of lithium batteries |
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| WANG Yuan-rui
,
ZHANG Hong-lei
,
SUN Qi
,
LIANG Qi
,
LIU Feng-juan
,
QIANG Guo-jun.Synthesis and characterization of Li1.3Ni0.35Mn0.65O2.3with layered structure as positive material of lithium batteries[J].Chinese Journal of Power Sources,2012,36(2):161-164. |
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| Authors: | WANG Yuan-rui ZHANG Hong-lei SUN Qi LIANG Qi LIU Feng-juan QIANG Guo-jun |
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| Affiliation: | 1(1.School of Chemical Engineering,Changchun Institute of Technology,Changchun Jilin 130012,China;2.Qingdao Qian Yun High-tech New Material Co.,Qingdao Shandong 266111,China) |
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| Abstract: | The layered Li1.3Ni0.35Mn0.65O2.3 was synthesized with co-precipitated metal hydroxide precursors Ni0.35Mn0.65-(OH)2 and characterized by XRD,SEM and charge discharge cycling.The effect of sintering temperature and sintering time on the electrochemical performance was studied.The result of XRD and SEM shows that the positive material has well-defined α-NaFeO2 layered structure and is spherical with uniform granularity.The materials exhibited high specific capacity of 180-220 mAh/g and excellent cycle performance between 2.0 V and 4.6 V at a current of 0.1 C. |
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| Keywords: | lithium batteries Li1 3Ni0 35Mn0 65O2 3 the positive material electrochemical properties |
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