| 银的添加方式对LiFePO_4性能的影响 |
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| 引用本文： | 张露露,杨学林,游敏,张鹏昌.银的添加方式对LiFePO_4性能的影响[J].材料导报,2009,23(6). |
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| 作者姓名： | 张露露 杨学林 游敏 张鹏昌 |
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| 作者单位： | 三峡大学机械与材料学院,宜昌,443002 |
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| 基金项目： | 国家自然科学基金，湖北省教育厅科学技术研究计划重点项目，宜昌市科技攻关项目，三峡大学科学基金 |
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| 摘 要： | 以化学镀(ELP)和真空热分解(VTD)工艺制得了LiFePO4/Ag复合材料,采用X射线衍射、扫描电镜对样品进行了表征,同时对样品进行了交流阻抗、循环伏安和恒流充放电等电化学性能测试.结果表明,与纯LiFe-PO4相比,复合材料的首次不可逆容量有所降低,比容量增加.真空热分解所制得的银颗粒更小且分布更均匀.该复合材料在0.2C下首次放电容量为143.1mAh/g,库仑效率为90.6%;在1C下循环30次后仍能释放出116.6mAh/g的可逆容量.
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| 关 键 词： | 银 化学镀 真空热分解 |
Effects of Silver-adding Methods on the Performance of LiFePO_4 |
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| ZHANG Lulu,YANG Xuelin,YOU Min,ZHANG Pengchang.Effects of Silver-adding Methods on the Performance of LiFePO_4[J].Materials Review,2009,23(6). |
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| Authors: | ZHANG Lulu YANG Xuelin YOU Min ZHANG Pengchang |
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| Affiliation: | College of Mechanical and Material Engineering;Three Gorges University;Yichang 443002 |
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| Abstract: | LiFePO4/Ag composites with 2wt% of silver are prepared by electroless plating(ELP) and vacuum thermal decomposition(VTD). X-ray diffraction(XRD) and scanning electron microscopy (SEM)are used to detect the phases presented in the composites and observe the samples morphology. In addition,AC electrochemical impedance spectroscopy(EIS),cyclic voltammetry(CV),along with constant current discharge/charge tests,are used to characterize the electrochemical properties of the composites. It is shown that the compos... |
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| Keywords: | LiFePO4 |
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