| 微波合成锂离子电池正极复合材料LiFePO4/C电化学性能 |
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| 引用本文： | 李发喜,仇卫华,胡环宇,赵海雷.微波合成锂离子电池正极复合材料LiFePO4/C电化学性能[J].北京科技大学学报,2005,27(1):86-89. |
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| 作者姓名： | 李发喜 仇卫华 胡环宇 赵海雷 |
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| 作者单位： | 北京科技大学材料科学与工程学院无机非金属材料系,北京,100083 |
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| 摘 要： | 采用微波合成技术合成锂离子电池正极材料LiFePO4,并进行碳掺杂,合成出复合材料LiFePO4/C.通过XRD,SEM和恒电流充放电实验,研究了材料结构形貌和电化学性能.结果表明,掺碳量4%时,采用40mA/g进行充放电,材料比容量可以达到109mAh/g,高倍率性能也有一定程度的提高.
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| 关 键 词： | 锂离子电池正极材料 磷酸铁锂 微波合成 碳掺杂 微波合成技术 锂离子电池正极材料 复合材料 化学性能 cathodes lithium battery processing microwave synthesized performance 程度 高倍率性能 比容量 充放电 掺碳 结果 结构形貌 研究 放电实验 恒电流 |
| 修稿时间： | 2004年4月27日 |
Electrochemical performance of LiFePO4 synthesized by microwave processing as lithium battery cathodes |
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| LI Faxi,QIU Weihua,HU Huanyu,ZHAO Hailei.Electrochemical performance of LiFePO4 synthesized by microwave processing as lithium battery cathodes[J].Journal of University of Science and Technology Beijing,2005,27(1):86-89. |
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| Authors: | LI Faxi QIU Weihua HU Huanyu ZHAO Hailei |
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| Abstract: | LiFePO4 cathode materials were prepared by microwave processing with a domestic microwave oven. LiFePO4/C composites were synthesized by carbon-coated to improve the capacity and rate capability. The microstucture and electrochemical performance of the composite were studied by X-ray diffraction, scanning electron microscopy and constant current charge-discharge experiment. The results indicated that the LiFePO4/C composite with 4% cabon exhibited a higher reversible specific capacity of 109 mAh/g at 40 mA/g and an excellent rate capability. |
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| Keywords: | lithiumion battery cathode materials lithium iron phosphate microwave processing carbon-coated |
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