| 以Fe2O3为原料通过水热–高温煅烧法合成LiFePO4/C纳米复合材料及其电化学性能研究（英文） |
| |
| 引用本文： | 邓洪贵,金双玲,何星,詹亮,乔文明,凌立成.以Fe2O3为原料通过水热–高温煅烧法合成LiFePO4/C纳米复合材料及其电化学性能研究（英文）[J].无机材料学报,2012(9):997-1002. |
| |
| 作者姓名： | 邓洪贵 金双玲 何星 詹亮 乔文明 凌立成 |
| |
| 作者单位： | 华东理工大学化学工程联合国家重点实验室;上海理工大学材料科学与工程学院 |
| |
| 基金项目： | National Natural Science Foundation of China(51002051);Fundamental Research Funds for the Central Universities(WA1014016);Science and Technology Commission of Shanghai Municipality(09520500900) |
| |
| 摘 要： | 采用三氧化二铁(Fe2O3)为铁源,抗坏血酸作碳源,通过在200℃下水热反应并经煅烧后合成出LiFePO4/C纳米复合材料.抗坏血酸在水热反应体系中不但作为最终反应产物的碳源,而且还起到了限制LiFePO4颗粒生长的作用.抗坏血酸的用量对产物的形貌、结构、碳含量有重要影响,进而影响产物的电化学性能.当抗坏血酸用量为1 g时,制得的LiFePO4/C纳米复合材料的粒径在220～280 nm.该材料用作锂离子电池的正极材料时,在0.1C的电流密度下循环500次后其放电容量仍保持159 mAh/g,并且具有较好的倍率性能.
|
| 关 键 词： | 锂离子电池 磷酸铁锂 Fe2O3 水热法 |
LiFePO4/C Nanocomposites Synthesized from Fe2O3 by a Hydrothermal Reaction-calcination Process and Their Electrochemical Performance |
| |
| DENG Hong-Gui,JIN Shuang-Ling,HE Xing,ZHAN Liang,QIAO Wen-Ming,LING Li-Cheng.LiFePO4/C Nanocomposites Synthesized from Fe2O3 by a Hydrothermal Reaction-calcination Process and Their Electrochemical Performance[J].Journal of Inorganic Materials,2012(9):997-1002. |
| |
| Authors: | DENG Hong-Gui JIN Shuang-Ling HE Xing ZHAN Liang QIAO Wen-Ming LING Li-Cheng |
| |
| Affiliation: | 1 (1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; 2. School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China) |
| |
| Abstract: | LiFePO 4 nanoparticles coated with a carbon layer were synthesized by a hydrothermal reaction-calcination process, using Fe 2 O 3 as an iron source and ascorbic acid as carbon source. The amount of ascorbic acid have an effect on the structure, phase and carbon amount of the final product. With 1 g ascorbic acid used in the reaction, the particle sizes of synthesized LiFePO 4 /C nanocomposites are in a range of 220–280 nm. Using as the cathode materials for the lithium-ion batteries, the as-prepared material shows high capacity and good cycle stability (159 mAh/g at 0.1C over 500 cycles), as well as good rate capability. |
| |
| Keywords: | lithium ion battery lithium iron phosphate Fe 2 O 3 hydrothermal method |
| 本文献已被 CNKI 等数据库收录！ |
|
