| 前驱体配料温度对水热法制备LiFePO4的影响 |
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| 引用本文： | 赵浩川,宋杨,郭孝东,钟本和,董静,刘恒. 前驱体配料温度对水热法制备LiFePO4的影响[J]. 物理化学学报, 2011, 27(10): 2347-2352. DOI: 10.3866/PKU.WHXB20110905 |
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| 作者姓名： | 赵浩川 宋杨 郭孝东 钟本和 董静 刘恒 |
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| 作者单位： | 1. College of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China;2. College of Materials Science and Engineering, Sichuan University, Chengdu 610064, P. R. China |
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| 摘 要： | 研究了配料温度对水热法制备磷酸铁锂的影响.通过X射线衍射（XRD）、扫描电镜（SEM）、循环伏安（CV）以及元素分析等手段分析了不同温度下制备的前驱体和最终的LiFePO4样品,其结果表明配料温度对磷酸铁锂前驱体颜色和特性有明显影响.通过仔细控制该温度可以制得高纯Li3PO4中间体并抑制前驱体中Fe（OH）3的形成.有利于进一步获得结晶良好不含Fe3+的LiFePO4样品,显著提高了LiFePO4材料的放电比容量.当配料温度为30℃时获得的样品,0.1C倍率下放电比容量达到156 mAh·g-1,0.5C倍率下放电比容量为151 mAh·g-1,10C倍率下放电比容量为127 mAh·g-1,循环20次容量保持率达99%.
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| 关 键 词： | 锂离子电池 正极 水热法 磷酸铁锂 温度 |
| 收稿时间： | 2011-04-25 |
| 修稿时间： | 2011-07-04 |
Effect of Precursor Ingredient Temperature on the Performance of LiFePO4 by Hydrothermal Method |
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| ZHAO Hao-Chuan,SONG Yang,GUO Xiao-Dong,ZHONG Ben-He,DONG Jing,LIU Heng. Effect of Precursor Ingredient Temperature on the Performance of LiFePO4 by Hydrothermal Method[J]. Acta Physico-Chimica Sinica, 2011, 27(10): 2347-2352. DOI: 10.3866/PKU.WHXB20110905 |
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| Authors: | ZHAO Hao-Chuan SONG Yang GUO Xiao-Dong ZHONG Ben-He DONG Jing LIU Heng |
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| Affiliation: | 1. College of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China;2. College of Materials Science and Engineering, Sichuan University, Chengdu 610064, P. R. China |
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| Abstract: | We investigated LiFePO_4 particles that were prepared by a hydrothermal reaction at different ingredient temperatures.The precursors and final LiFePO_4 products were characterized by X-ray diffraction (XRD),scanning electron microscopy(SEM),cyclic voltammetry(CV),and elemental analysis.The results show that ingredient temperature had a significant effect on the color and characteristics of the LiFePO_4 precursors.High purity Li_3PO_4 was obtained and the formation of Fe(OH)_3 in the precursors was inhibited... |
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| Keywords: | Lithium ion battery Cathode Hydrothermal method LiFePO_4 Temperature |
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