| Microwave synthesis of LiCoO2 cathode materials |
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| 引用本文： | 于永丽,翟秀静,符岩,姚广春. Microwave synthesis of LiCoO2 cathode materials[J]. 中国有色金属学会会刊, 2005, 15(3): 636-641 |
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| 作者姓名： | 于永丽 翟秀静 符岩 姚广春 |
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| 作者单位： | School of Science，Northeastern University，Shenyang 110004，China，School of Materials and Metallurgy，Northeastern University，Shenyang 110004，China，School of Materials and Metallurgy，Northeastern University，Shenyang 110004，China，School of Materials and Metallurgy，Northeastern University，Shenyang 110004，China |
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| 摘 要： | 1INTRODUCTION LiCoO2isacommerciallyusedcathodemateri alforlithiumionbattery.Comparedwithothercathodematerials,suchasLiNiO2,LiMn2O4and theirdopedcompounds,LiCoO2hastheadvanta gesofhighpotential,excellentreversibility,longcyclelifeandreliableperformance[14].Thereare mainlyseveralmethodsforsynthesisofLiCoO2,suchasconventionalceramicmethod[5,6],sol gel synthesis[7],andlow temperaturesolutioncom bustion[8].Amongthesemethods,theconvention alceramicmethodhasbeenappliedtoindustrial productio…
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| 关 键 词： | 微波合成 锂-钴-氧化复合物 阴极材料 锂离子电池 |
Microwave synthesis of LiCoO2 cathode materials |
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| YU Yong-Li,ZHAI Xiu-jing,FU Yan,YAO Guang-chun. Microwave synthesis of LiCoO2 cathode materials[J]. Transactions of Nonferrous Metals Society of China, 2005, 15(3): 636-641 |
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| Authors: | YU Yong-Li ZHAI Xiu-jing FU Yan YAO Guang-chun |
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| Abstract: | LiCoO2 powder used as cathode material for lithium ion battery was synthesized by microwave heating markedly affect the purity, morphology and electrochemical behaviors of the samples. X-ray diffraction (XRD) patterns display that the samples synthesized at 360 W for 10 min are pure layered LiCoO2, and SEM photos show that the powders are crystalline with well-defined facets whose sizes are about 5 μm. The performance of Co3O4 and starting materials by microwave heating and conventional heating was investigated. It is indicated that Co3O4 decomposes into CoO in microwave field at 750 ℃ and the mechanism of preparing LiCoO2 by microwave heating is different from that by conventional heating. The electrochemical behaviors of samples were tested. As a result, the highest specific discharge capacity is 134.3 mAh/g and the coulomb efficiency is 92.56%. |
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| Keywords: | microwave synthesis lithium-cobalt-oxygen compound cathode materials lithium ion battery |
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