| 热解碳结构对LiFePO_4/C复合电极性能的影响 |
| |
| 引用本文： | 罗绍华,田勇,唐子龙,武聪,张中太. 热解碳结构对LiFePO_4/C复合电极性能的影响[J]. 稀有金属材料与工程, 2009, 38(Z2) |
| |
| 作者姓名： | 罗绍华 田勇 唐子龙 武聪 张中太 |
| |
| 作者单位： | 1. 东北大学秦皇岛分校,河北,秦皇岛,066004
2. 清华大学,北京,100084 |
| |
| 基金项目： | 新型陶瓷与精细工艺国家重点实验室(清华大学)开放课题基金，河北省教育厅自然科学研究项目，2008年度宁夏自然科学基金，2008年秦皇岛市科学技术研究与发展指导计划 |
| |
| 摘 要： | 分别以5种含碳有机物为碳源,通过固相热裂解法制备了5种LiFePO_4/C复合正极粉体材料,利用XRD和拉曼光谱表征了复合粉体中碳的结构.复合材料含有单一的磷酸铁锂相,裂解碳以无定型形式存在.不同裂解碳D、G拉曼峰的强度有所不同,其比值R反映了石墨化程度的强弱.对于石墨化程度高的LiFePO_4/C复合正极材料,其电子电导性能高,反映在电池容量性质上就是电池容量高.比较不同有机前驱体对复合正极材料的作用效果,聚乙烯醇是较佳的选择.
|
| 关 键 词： | 磷酸铁锂 热裂解碳 正极材料 锂离子电池 |
Effect of the Structure of Pyrolytic Carbon on the Performance of LiFePO_4/C Composite Cathode Material |
| |
| Luo Shaohua,Tian Yong,Tang Zilong,Wu Cong,Zhang Zhongtai. Effect of the Structure of Pyrolytic Carbon on the Performance of LiFePO_4/C Composite Cathode Material[J]. Rare Metal Materials and Engineering, 2009, 38(Z2) |
| |
| Authors: | Luo Shaohua Tian Yong Tang Zilong Wu Cong Zhang Zhongtai |
| |
| Affiliation: | Luo Shaohua1,Tian Yong1,Tang Zilong2,Wu Cong1,Zhang Zhongtai2 (1. Northeastern University at Qinhuangdao Branch,Qinhuangdao 066004,China) (2. Tsinghua University,Beijing100084,China) |
| |
| Abstract: | LiFePO4/C composite cathode material was prepared by solid-phase pyrolysis process with five kinds of organic carbon as the source. The structure of the carbon in the composite powder was characterized by XRD and Raman spectrum. The single LiFePO4 phase and amorphous carbon can be found in the products. The intensity of the D,G bands in different organic matter is varied. The Raman intensity ratio of D/G bands reflects the degree of graphitization. The LiFePO4/C compound cathode material with high degree of... |
| |
| Keywords: | LiFePO_4 pyrolytic carbon cathode material lithium-ion battery |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
