以乳酸镁做为Mg2+的掺杂源和部分的碳源,在惰性氛围下用模板-固相合成法合成了掺Mg2+的LiFePO4/C复合正极材料,考察了Mg2+对于目标化合物电化学和物理性能的影响.研究结果表明,在C/3倍率下材料掺杂前后第二个循环的放电容量分别为140.5和159.9mAh/g,循环20次后容量为140.4和162.1mAh/g.电化学交流阻抗表明,掺杂后的材料阻抗Rct从180Ω减小到120Ω.掺杂后振实密度比掺杂前提高了0.229g·cm-3.
参考文献
| [1] | Padhi A K,Nanjundaswamy K S,Goodenought J B.J.Electrochem.Soc.,1997,144 (4):1188-1194. |
| [2] | Hyung S K,Byung W C,Won I C.J.Power Source,2004,132:235-239. |
| [3] | Takahashi M,Tobishima S,Takei K,et al.Solid State Ionics,2002,148:283-289. |
| [4] | Chung S Y,Bloking J T,Chiang Y M.Nat Mater,2002,1 (2):123-128. |
| [5] | Prosini P P,Lisi M,Zane D,et al.Solid State Ionics,2002,148:45-51. |
| [6] | Yamada A,Chung S C,Hinokuma K.J.Electrochem.Soc.,2001,148 (3):A224-A229. |
| [7] | Park K S,Son J T,Chung H T,et al.Solid State Commun.,2004,129:311-314. |
| [8] | Huang H,Yin S C,Nazar L F.Electrochem and Solid State Lett.,2001,4 (10):A170-A172. |
| [9] | 卢俊彪,唐子龙,张中太,等(LU Jun-Biao,et al).无机材料学报(Journal of Inorganic Material),2005,20(3):666-669. |
| [10] | Ravet N,Goodenough J B,Besner S,et al.The 1999 Joint International Meeting,Honolulu,Hawaii,1999.17-22. |
| [11] | YANG Shu-ting,ZHAO Na-hong,DONG Hong-yu,et al.Electrochim Acta,2005,51:166-171. |
| [12] | Chen Z,Dahn J R.J.Electrochem.Soc.,2002,149:A1184-A1189. |
| [13] | Chung S Y,Chiang Y M.Electrochem and Solid State Lett.,2003,6 (12):A278-A281. |
| [14] | Herle P S,Ellis B,Coombs N,et al.Nat.Mater,2004,3(3):147-152. |
| [15] | 卢俊彪,唐子龙,张中太,等(LU Jun-biao,et al).物理化学学报(Acta Phys.-Chim.Sin.),2005,21(3):319-323. |
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%