| Synthesis,Characterization and Properties of LiFePO_4/C Cathode Material |
| |
| 作者姓名： | ZHOU Xin-wen~ ZHAN Dan~ WANG Li-na~ LIU Qiao-yun~ ZONG Hong-xing~ ZHANG Ke-li~ . College of Chemistry and Molecular Sciences Wuhan University Wuhan Hubei China . Center of Nanoscience and Nanotechnology Research Wuhan University Wuhan Hubei China |
| |
| 作者单位： | ZHOU Xin-wen~1，ZHAN Dan~1，WANG Li-na~1，LIU Qiao-yun~1，ZONG Hong-xing~1，ZHANG Ke-li~1，2 1. College of Chemistry and Molecular Sciences，Wuhan University，Wuhan 430072，Hubei，China; 2. Center of Nanoscience and Nanotechnology Research，Wuhan University，Wuhan 430072，Hubei，China |
| |
| 基金项目： | SupportedbytheNationalNaturalScienceFoundationofChina(20071026) |
| |
| 摘 要： | 0Introduction SincePadhietal1]foundlithiumironphosphate(LiFe PO4)couldbeusedascathodematerialforthelithiumionbatteries,manyresearchgroupshavebeendevotedtoim provingtheperformanceofthismaterial26].Theythought thatLiFePO4isoneofthemostpromisingcathodemate…
|
Synthesis,Characterization and Properties of LiFePO_4/C Cathode Material |
| |
| Abstract: | Lithium iron phosphate coated with carbon (LiFePO_4/C) was synthesized by improved solid-state reaction using comparatively lower temperature and fewer sintering time. The carbon came from citric acid, which acted as a new carbon source. It was characterized by thermogravimetry and differential thermal analysis (TG/DTA), X ray diffractometer (XRD), Element Analysis (EA) and Scanning electron microscope (SEM). We also studied the electrochemical properties of the material. The first discharge capacity of the LiFePO_4/C is 121 mAh\5g~-1 at 10 mA\5g~-1 at room temperature. When the current density increased to 100 mA\5g~-1, the first discharge capacity decreased to 110 mAh\5g~-1 and retained 95% of the initial capacity after 100 cycles. The LiFePO_4/C obtained shows a good electrochemical capacity and cycle ability at a large current density. |
| |
| Keywords: | lithium ion battery cathode material lithium iron phosphate rheological phase reaction |
| 本文献已被 CNKI 等数据库收录！ |
