| 高比能LiFePO4的制备及性能研究 |
| |
| 引用本文： | 李军,赖桂棠,黄慧民,李大光,夏信德. 高比能LiFePO4的制备及性能研究[J]. 电化学, 2007, 13(4): 403-406 |
| |
| 作者姓名： | 李军 赖桂棠 黄慧民 李大光 夏信德 |
| |
| 作者单位： | 广东工业大学轻工化工学院,广东,广州,510006;广州市鹏辉电池有限公司博士后工作站,广东,广州,511483;广东工业大学轻工化工学院,广东,广州,510006;广州市鹏辉电池有限公司博士后工作站,广东,广州,511483 |
| |
| 摘 要： | 应用液相沉淀法-固相烧结法制备高密度的LiFePO4/C及纯相LiFePO4.X射线衍射、扫描电镜、傅立叶红外光谱仪、电化学性能测试表明:该样品具有单一的橄榄石结构和3.4 V左右的放电平台,掺碳的LiFe-PO4具有更优良的性能,粒度较小粒径分布均匀,振实密度达1.46 g/cm3,0.1C首次放电比容量为144.6mAh/g,循环20次后容量保持率为93.2%,1C倍率首次放电比容量为133.5 mAh/g,循环20次后容量下降8.76%.
|
| 关 键 词： | 锂离子电池 正极材料 LiFePO4 高比能 |
| 文章编号： | 1006-3471（2007）04-0403-04 |
| 收稿时间： | 2007-05-10 |
| 修稿时间： | 2007-07-09 |
Preparation and Properties of High Capacity LiFePO4 |
| |
| LI Jun,LAI Gui-tang,HUANG Hui-min,LI Da-guang,XIA Xin-de. Preparation and Properties of High Capacity LiFePO4[J]. Electrochemistry, 2007, 13(4): 403-406 |
| |
| Authors: | LI Jun LAI Gui-tang HUANG Hui-min LI Da-guang XIA Xin-de |
| |
| Abstract: | Carbon-doped LiFePO4/C and pure phase LilTePO4 cathode materials were prepared by liquid-state precipitation reaction. The results of XRD, SEM, elemental analysis, FTIR and A. C. impedance tests show that the samples have had olivine structure and a 3.4V discharge platform. The tapped density of LiFePO4/C sample could reach 1.46g/cm^3, the initiate discharge capacity is 144.6mAh/g at 0.1 C, which remained capacity is 93. 2% after 20 cycles. The first discharge capacity is 133.5mAh/g at 1C and the capacity decreased 8.76% after 20 cycles. |
| |
| Keywords: | lithium ion battery cathode materials lithium iron phosphate high capacity |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《电化学》浏览原始摘要信息 |
|
点击此处可从《电化学》下载全文 |
|
