通过碳热还原法合成了化学计量比的Li3V2(PO4)3和富锂的锂离子电池正极材料Li3+xV2(PO4)3(x=0.02,0.04,0.05,0.06).利用XRD、SEM和电化学测试对Li3+xV2(PO4)3进行研究表明:所合成的试样均为单斜晶系结构,无杂相存在;SEM测试发现,掺锂可以明显改善Li3V2(PO4)3一次颗粒表面的结构和形貌;电化学性能测试表明,随着掺锂量的提高,试样的循环性能变好.通过研究发现,Li3.04V2(PO4)3具有较高的初始容量和良好的循环性能.
参考文献
| [1] | Nanjundaswamy K S;Padhi A K;Goodenough J B et al.[J].Solid State Ionics,1996,92(1-2):1. |
| [2] | 施志聪;杨勇 .[J].化学进展,2005,17(04):604. |
| [3] | Zhong Shengkui;Yin Zhoulan;Wang Zhixing et al.[J].Journal of Inorganic Biochemistry,2006,22(10):1843. |
| [4] | ZHONG Sheng-kui,YIN Zhou-lan,WANG Zhi-xing,GUO Hua-jun,LI Xin-hai.Synthesis and characterization of novel cathode material Li3V2(PO4)3 by carbon-thermal reduction method[J].中国有色金属学会会刊（英文版）,2006(z1):708-710. |
| [5] | ZHONG Sheng-kui,YIN Zhou-lan,WANG Zhi-xing,CHEN Qi-yuan.Synthesis and characterization of triclinic structural LiVPO4F as possible 4.2 V cathode materials for lithium ion batteries[J].中南工业大学学报(英文版),2007(03):340-343. |
| [6] | ZHONG Shengkui,YIN Zhoulan,WANG Zhixing,CHEN Qiyuan.Synthesis and electrochemical properties of Al-doped LiVPO4F cathode materials for lithium-ion batteries[J].稀有金属（英文版）,2007(05):445-449. |
| [7] | 钟胜奎,尹周澜,王志兴,陈启元.碳热还原法制备LiVPO4F及其电化学性能[J].功能材料,2006(10):1613-1616. |
| [8] | 钟胜奎,尹周澜,王志兴,郭华军,李新海.球磨对LiVPO4F的合成及性能的影响[J].电池,2006(06):449-450. |
| [9] | Hu Y Q;Doeff M M;Kostecki R et al.[J].Journal of the Electrochemical Society,2004,151(08):A1279. |
| [10] | Barker;Saidi M Y;Swoyer J L .[P].US Patent:6387568,2002. |
| [11] | Barker;Saidi M Y .[P].US Patent:5871866,1999. |
| [12] | Pistoia G;Antonini A;Rosati R .[J].Journal of Electroanalytical Chemistry,1996,410:115. |
| [13] | Pistoia G;Antonini A;Rosati R .[J].Journal of Electroanalytical Chemistry,1996,410:115. |
| [14] | 钟胜奎 .锂离子电池正极材料LiVPO<,4>F和Li<,3>V<,2>（PO<,4>）<,3>的合成及电化学性能研究[D].中南大学,2007. |
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