| 纺锤体形LiFePO4锂离子电池正极材料的制备与性能 |
| |
| 引用本文： | 苏畅,陆国强,徐立环,张诚,马淳安.纺锤体形LiFePO4锂离子电池正极材料的制备与性能[J].物理化学学报,2011,27(3):609-614. |
| |
| 作者姓名： | 苏畅 陆国强 徐立环 张诚 马淳安 |
| |
| 作者单位： | State Key Laboratory Breeding Base for Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China |
| |
| 基金项目： | 国家自然科学基金，浙江省公益性技术应用研究计划 |
| |
| 摘 要： | 采用低温溶剂热法合成了LiFePO4, 并通过热处理方法制备出LiFePO4/C锂离子电池复合正极材料. 利用扫描电镜(SEM)、透射电镜(TEM)、X射线衍射(XRD)、傅里叶变换红外(FTIR)光谱以及恒电流充放电测试等方法对样品进行结构表征和充放电性能测试. 结果表明: 采用丙三醇(甘油)为溶剂, 低温条件下(120 °C)合成的LiFePO4具有橄榄石型晶体结构, 呈纺锤体形貌, 且具有粒径分布均匀的特点. 热处理后制备的LiFePO4/C复合正极材料仍呈纺锤体形貌, 且表现出了优良的充放电性能. 室温下以0.1C倍率恒流充放电, LiFePO4/C的首次放电比容量达到147.2 mAh·g-1, 50次循环后放电比容量仍然保持在136.3 mAh·g-1. 当倍率为0.2C、0.5C和1C时, 样品的平均放电比容量分别在130、120和108 mAh·g-1左右.
|
| 关 键 词： | 锂离子电池 LiFePO4 纺锤体形 溶剂热法 充放电性能 |
| 收稿时间： | 2010-10-18 |
| 修稿时间： | 2011-01-18 |
Synthesis and Properties of Spindle-Shaped LiFePO4 for the Cathode Material of Lithium Ion Battery |
| |
| SU Chang,LU Guo-Qiang,XU Li-Huan,ZHANG Cheng,MA Chun-An.Synthesis and Properties of Spindle-Shaped LiFePO4 for the Cathode Material of Lithium Ion Battery[J].Acta Physico-Chimica Sinica,2011,27(3):609-614. |
| |
| Authors: | SU Chang LU Guo-Qiang XU Li-Huan ZHANG Cheng MA Chun-An |
| |
| Institution: | State Key Laboratory Breeding Base for Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China |
| |
| Abstract: | We synthesized LiFePO4 directly by a solvothermal method at low temperature and then a heat treatment was carried out to give a LiFePO4 /C composite for using as a cathode in lithium ion battery.The crystal structure and the charge-discharge performance of the prepared samples were characterized by scanning electron microscopy (SEM),transmission electron microscopy (TEM),X-ray diffraction (XRD),Fourier transform infrared (FTIR) spectroscopy,and galvanostatic charge-discharge testing.The results indicated th... |
| |
| Keywords: | LiFePO4 |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《物理化学学报》浏览原始摘要信息 |
| 点击此处可从《物理化学学报》下载免费的PDF全文 |
|
