采用固相法合成了锂离子电池正极材料LiFePO4.为了改进LiFePO4的高倍率充放电性能,采用原位聚合的方法合成了一系列聚苯胺-LiFePO4(PAn-LiFePO4)复合正极材料.通过扫描电子显微镜(SEM)观察了样品的形貌.交流阻抗测试表明聚苯胺的包覆降低了LiFePO4电极的电化学反应阻抗.充放电测试表明PAnLiFePO4复合材料的放电容量更高,循环性能更好.
参考文献
| [1] | X.-Z Liao;Z.-F. Ma;L. Wang .A Novel Synthesis Route for LiFePO_4/C Cathode Materials for Lithium-Ion Batteries[J].Electrochemical and solid-state letters,2004(12):A522-A525. |
| [2] | Padhi AK.;Goodenough JB.;Nanjundaswamy KS. .PHOSPHO-OLIVINES AS POSITIVE-ELECTRODE MATERIALS FOR RECHARGEABLE LITHIUM BATTERIES[J].Journal of the Electrochemical Society,1997(4):1188-1194. |
| [3] | A. Yamada;S.C. Chung;K. Hinokuma .Optimized LiFePO_4 for Lithium Battery Cathodes[J].Journal of the Electrochemical Society,2001(3):A224-A229. |
| [4] | Prosini Pier Paolo;Carewska Maria;Scaria Silvera et al.A new synthetic route for preparing LiFePO4 with enchanced electrochemical peformance[J].Journal of the Electrochemical Society,2002,149(07):A886. |
| [5] | Prosini Pier Paolo;Zane Daniela;Pasquali Mauro .Improved electrochemical performance of a LiFePO4-based composite cathode[J].Elcctrochimica Acta,2001,46:3517. |
| [6] | F. Croce;A.D' Epifanio;J. Hassoun .A Novel Concept for the Synthesis of an Improved LiFePO_4 Lithium Battery Cathode[J].Electrochemical and solid-state letters,2002(3):A47-A50. |
| [7] | Barker J;Saidi M Y;Swoyer J L .Lithium iron (Ⅱ) phospho-olivines prepared by a novel carbonthermal reduction method[J].Electrochemical and Solid-State Letters,2003,6(03):A53. |
| [8] | Zane Danida;Carewska Maria;Seaecia Silvera et al.Factor effecting rate performance of undoped LiFeFO4[J].Electrochimica Acta,2004,49:4259. |
| [9] | Yamada Atauo;Kudo Yoshihiro;Liu Kuangyu .Reaction mechanism of the olivine-type Lix (M0.6 Fe0.4)PO4 (0≤x≤1)[J].Journal of the Electrochemical Society,2001,148(07):747. |
| [10] | Guohua Li;Hideto Azuma;Masayuki Tohda .Optimized LiMn_yFe_(1-y)PO_4 as the Cathode for Lithium Batteries[J].Journal of the Electrochemical Society,2002(6):A743-A747. |
| [11] | Chung Sungyoon;Chiang Yetming .Microscale measurementa of the electrical conductivity of doped LiFePO4[J].Electroehem Solid-State Lett,2003,6(12):278. |
| [12] | 胡成林,代建清,戴永年,易惠华.Ti离子掺杂对LiFePO4材料性能的影响[J].材料导报,2007(07):147-149. |
| [13] | 丁燕怀,苏光耀,刘黎,王承位.锆离子掺杂对LiFePO4电化学性能的影响[J].电源技术,2006(08):657-659. |
| [14] | Yang Leiling;Qiu Weihua;Liu Qingguo .Polyaniline cathode material for lithium batteries[J].Solid State Ionics,1996,86-88:819. |
| [15] | 米常焕,曹高劭,赵新兵.碳包覆LiFePO4的一步固相法制备及高温电化学性能[J].无机化学学报,2005(04):556-560. |
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%