| 锂离子电池正极材料LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2的合成及性能研究 |
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| 引用本文： | 温建武,滕元成,李玉香,王进,任雪潭.锂离子电池正极材料LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2的合成及性能研究[J].电子元件与材料,2009,28(12). |
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| 作者姓名： | 温建武 滕元成 李玉香 王进 任雪潭 |
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| 作者单位： | 西南科技大学,材料科学与工程学院,四川,绵阳,621010 |
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| 基金项目： | 国家自然科学基金资助项目，西南科技大学青年基金资助项目 |
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| 摘 要： | 采用辐照凝胶法制备了锂离子电池正极用LiNi1/3Co1/3Mn1/3O2粉体材料。采用XRD、SEM和电化学充放电测试对制备材料的结构和性能进行了表征。结果表明:900℃制得的样品具有较好的层状结构,结晶性适中,电化学性能优异:其首次放电容量高达184mA·h/g(2.80～4.50V,C/10),30次循环后的容量保持率为87.4%,表现出较好的充放电容量和循环性能,较之850,950℃煅烧样品具有最小的交流阻抗和直流阻抗。
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| 关 键 词： | 锂离子电池 LiNi1/3Co1/3Mn1/3O2 正极材料 容量 辐照 |
Synthesis and electrochemical performance of LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 for positive electrode material of lithium-ion battery |
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| WEN Jianwu,TENG Yuancheng,LI Yuxiang,WANG Jin,REN Xuetan.Synthesis and electrochemical performance of LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 for positive electrode material of lithium-ion battery[J].Electronic Components & Materials,2009,28(12). |
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| Authors: | WEN Jianwu TENG Yuancheng LI Yuxiang WANG Jin REN Xuetan |
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| Abstract: | Layered LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 as lithium insertion positive-electrode material was prepared by a radiated polymer gel method.The structure and performance of LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 was characterized by XRD,SEM and electrochemical methods.The results show that the optimized sample (900 ℃) possesses a well-layered structure and moderate crystallinity compared with the samples calcined at 850,950 ℃.And high initial discharge capacity of 184 mA·h/g (2.80～4.50 V,C/10),excellent capacity retention of 87.4% after 30 cycles and the lowest AC and DC impedance exhibite. |
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| Keywords: | LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 lithium-ion battery LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2 positive electrode material capacity radiation |
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