| 高温固相法制备LiFePO4／C正极材料及其性能研究 |
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| 引用本文： | 杨占旭,乔庆东,康晓雪,姜海波.高温固相法制备LiFePO4／C正极材料及其性能研究[J].石油化工高等学校学报,2011(5):38-40,44. |
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| 作者姓名： | 杨占旭 乔庆东 康晓雪 姜海波 |
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| 作者单位： | 辽宁石油化工大学石油化工学院;中国石油抚顺石化公司催化剂厂; |
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| 基金项目： | 辽宁省自然科学基金项目(20082187) |
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| 摘 要： | 以Fe2O3，LiH2PO4，乙炔黑和蔗糖为原料，采用高温固相合成方法制备LiFePO4／C复合正极材料。利用X射线衍射（XRD）、扫描电镜（SEM）和电化学测试等方法对合成材料的结构、形貌以及电化学性能进行表征。结果表明，合成材料为单一晶相正交晶系结构，在电压为2．50～4．20V（vs．Li^＋／Li），以0．1mA／cm^2电流密度下经恒电流充放电测试，其首次放电比容量为156．3mAh／g，经过30周充放电循环后放电比容量为157．7mAh／g，表现出较大的初始放电比容量和优异的循环性能。
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| 关 键 词： | 锂离子电池 正极材料 高温固相法 |
The Synthesis and Properties of LiFePO_4/C Prepared by Solid-State Method at High Temperature |
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| YANG Zhan-xu,QIAO Qing-dong,KANG Xiao-xue,JIANG Hai-bo.The Synthesis and Properties of LiFePO_4/C Prepared by Solid-State Method at High Temperature[J].Journal of Petrochemical Universities,2011(5):38-40,44. |
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| Authors: | YANG Zhan-xu QIAO Qing-dong KANG Xiao-xue JIANG Hai-bo |
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| Affiliation: | YANG Zhan-xu~1,QIAO Qing-dong~1,KANG Xiao-xue~1,JIANG Hai-bo~2 (1.School of Petrochemical Engineering,Liaoning Shihua University,Fushun Liaoning 113001,P.R.China,2.Catalysts Factory of Fushun Petrochemical Company of PetroChina,P.R.China) |
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| Abstract: | LiFePO_4/C cathode material was prepared from solid-state method using Fe_2O_3,LiH_2PO_4,black carbon and sugar as the starting materials.The synthesized material was characterized by means of X-ray diffraction(XRD),scanning electron microscope(SEM) and galvanostatic charge/discharge cycling.The results show that the products are single phases and all the peaks are indexable to the orthorhombic structure.The synthesized LiFePO_4 /C exhibits an excellent electrochemical property with initial discharge specif... |
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| Keywords: | Lithium-ion batteries Cathode material Solid-state method |
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