| 碳芯结构LiFePO_4/C复合材料的表征及电化学性能 |
| |
| 引用本文： | 陈晗,龚文强,刘友良,刘建华.碳芯结构LiFePO_4/C复合材料的表征及电化学性能[J].无机材料学报,2010,25(5):480-484. |
| |
| 作者姓名： | 陈晗 龚文强 刘友良 刘建华 |
| |
| 作者单位： | 湖南工业大学 冶金工程学院, 株洲 412000 |
| |
| 基金项目： | 国家自然科学基金(50972044); 湖南省自然科学基金(09JJ5010); 湖南省教育厅优秀青年项目(09B024) |
| |
| 摘 要： | 采用环氧树脂为碳源制备出碳芯结构LiFePO4/C复合材料.利用X射线衍射、扫描电镜、透射电镜和X光电子能谱等分别对复合材料的晶体结构、表面形貌及表面成分进行表征,采用恒电流充放电和电化学阻抗方法研究试样的电化学性能.实验结果表明:碳芯结构复合材料是由无定形碳线和纳米LiFePO4颗粒组成.碳芯结构LiFePO4/C复合材料在15mA/g的电流密度下,首次放电容量达到166mAh/g,当电流密度增加到750mA/g,放电容量高达131mAh/g,经过50次循环后,容量保持率高达99.2%.
|
| 关 键 词： | LiFePO4 复合材料 碳芯结构 电化学性能 |
| 收稿时间： | 2009-08-01 |
| 修稿时间： | 2009-12-01 |
Characterization and Electrochemical Properties of LiFePO_4/C Composite with Carbon Core Structure |
| |
| CHEN Han,GONG Wen-Qiang,LIU You-Liang,LIU Jian-Hua.Characterization and Electrochemical Properties of LiFePO_4/C Composite with Carbon Core Structure[J].Journal of Inorganic Materials,2010,25(5):480-484. |
| |
| Authors: | CHEN Han GONG Wen-Qiang LIU You-Liang LIU Jian-Hua |
| |
| Affiliation: | College of Metallurgy Engineering, Hunan University of Technology, Zhuzhou 412000, China |
| |
| Abstract: | LiFePO4/C composite with carbon core structure was successfully synthesized by using epoxy resin as carbon source.The microstructure,morphology,surface composition of LiFePO4/C composite were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),transmission electron microscope(TEM) and X-ray photoelectron spectroscope(XPS).Their electrochemical properties were investigated in terms of galvanostatic charge-discharge and electrochemical impedance spectroscope(EIS) tests.The experimental r... |
| |
| Keywords: | LiFePO4 composite carbon core structure electrochemical properties LiFePO4 |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《无机材料学报》浏览原始摘要信息 |
|
点击此处可从《无机材料学报》下载全文 |
|
