采用二步固相烧结法制备了Li4TiO12负极材料,优化了制备工艺条件.利用X射线衍射分析(XRD)、扫描电镜(SEM)等表征了材料的形貌和结构,并用充放电测试仪、循环伏安(CV)和交流阻抗(EIS)研究了材料的电化学性能.结果表明,合成的Li4Ti5O12具有单一的尖晶石结构和良好的电化学性能,0.1C首次放电比容量为158.9 mAh/g,循环20次后容量保持率为97.6％,1C倍率首次放电比容量为108.9mAh/g,循环20次后容量下降了3.05％.
参考文献
| [1] | Ohzuku T.;Yamamoto N.;Ueda A. .ZERO-STRAIN INSERTION MATERIAL OF LI[LI1/3TI5/3]O-4 FOR RECHARGEABLE LITHIUM CELLS[J].Journal of the Electrochemical Society,1995(5):1431-1435. |
| [2] | Masatoshi Majima;Satoshi Ujiie;Eriko Yagasaki et al.Development of long life lithium ion battery for power storage[J].Journal of Power Sources,2001,101(01):53. |
| [3] | Sebastien Patoux;Lise Daniel;Carole Bourbon;Helene Lignier;Carole Pagano;Frederic Le Cras;Severine Jouanneau;Sebastien Martinet .High voltage spinel oxides for Li-ion batteries: From the material research to the application[J].Journal of Power Sources,2009(1):344-352. |
| [4] | Lu Jun et al.Single crystalline lithium titanate nanostructure with enhanced rate perfor-mance for lithium ion battery[J].Journal of Power Sources,2012,202:246. |
| [5] | A. S. Prakash;P. Manikandan;K. Ramesha .Solution-Combustion Synthesized Nanocrystalline Li4Ti5O_(12) As High-Rate Performance Li-Ion Battery Anode[J].Chemistry of Materials: A Publication of the American Chemistry Society,2010(9):2857-2863. |
| [6] | Loic Goemaere;Adrien Soares;Costana M. Ionica-Bousquet;Yael Thiaux;Lorenzo Stievano;Christian Glaize;Laure Monconduit .Studying the electrochemical response to emulated photovoltaic electrochemical constrains of Li-ion electrode materials at the lab-scale[J].Journal of Power Sources,2011(20):8688-8691. |
| [7] | 韩恩山,张俊平,朱令之,靳素芳.高温固相法制备Li4Ti5O12负极材料及电化学性能研究[J].电源技术,2011(06):656-659. |
| [8] | 冯祥明,李璐,张建民,杨长春.负极材料为Li4Ti5O12的18650型锂离子电池的性能[J].电池,2011(02):85-87. |
| [9] | Chih-Yuan Lin;Jenq-Gong Duh .Porous Li_4Ti_5O_(12) anode material synthesized by one-step solid state method for electrochemical properties enhancement[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2011(8):3682-3685. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%