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以三乙醇胺为配位剂,Ti(OC4H9)4和LiAc·2 H2O为原料,通过溶胶-凝胶法制备锂离子电池负极材料尖晶石Li4Ti5O12.通过X射线衍射、扫描电子显微镜、循环伏安、电化学阻抗和恒流充放电分析检测产物的结构、形貌及电化学性能.结果表明:配位剂的用量对Li4Ti5O12结构及电化学性能有显著影响,其中三乙醇胺与Ti摩尔比为0.8时,Li4 Ti5O12具有良好的的电化学性能.1.OC下,其首次放电容量为153.0mAh· g-1,35次循环后放电容量仍为139.9mAh· g-1,容量保持率为91.5%.

参考文献

[1] S. Scharner;W. Weppner;P. Schmid-Beurmann .Evidence of two-phase formation upon lithium insertion into the Li{sub}1.33Ti{sub}1.67O{sub}4 spinel[J].Journal of the Electrochemical Society,1999(3):857-861.
[2] Amimoto K;Kanatomi H;Nagakari A et al.Deuterium isotope effect on the solid-state thermal isomerization of photocoloured cis-keto species of N-salicylideneaniline[J].Chemical Communications,2003,1003:870-872.
[3] 吴显明,肖卓炳,麻明友,陈上.溶胶-凝胶法制备Li4/3Ti5/3O4/Ag复合材料及其表征[J].精细化工,2010(08):751-754,759.
[4] Nakahara K;Nakajima R;Matsushima T et al.Preparation of particulate Li4 Tis O12 having excellent characteristics as an electrode active material for power storage cells[J].Journal of Power Sources,2003,117:131-136.
[5] 王先友,王雁生,汪形艳,江兰兰,龙晚妹,陈权启,刘黎.高性能Li4Ti5O12的合成及其电化学性能研究[J].湘潭大学自然科学学报,2010(01):57-62.
[6] 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.
[7] 杨晓燕,华寿南,张树永.锂钛复合氧化物锂离子电池负极材料的研究[J].电化学,2000(03):350-356.
[8] K. Zaghib;M. Simoneau;M. Armand;M. Gauthier .Electrochemical study of Li_4Ti_5O_12 as negative electrode for Li-ion polymer rechargeable batteries[J].Journal of Power Sources,1999(0):300-305.
[9] Bach S;Pereira-Ramos J P;Baffier N et al.Electrochemical properties of sol-gel Li4/3Ti5/3O4[J].Journal of Power Sources,1999,81-82:273-276.
[10] Woo S W;Dokko K;Kanamura K .Preparation and characterization of three dimensionally ordered macroporous Li4 Ti5O12 anode for lithium batteries[J].Electrochimica Acta,2007,53:79-82.
[11] 何则强,熊利芝,陈上,吴显明,刘文萍,黄可龙.Li4Ti5O12-聚苯胺复合材料的合成与表征[J].无机化学学报,2007(08):1382-1386.
[12] Hao YJ;Lai QY;Xu ZH;Liu XQ;Ji XY .Synthesis by TEA sol-gel method and electrochemical properties of Li4Ti5O12 anode material for lithium-ion battery[J].Solid state ionics,2005(13/14):1201-1206.
[13] HAO Yan-jing;LAI Qiong-yu;LU Ji-zheng et al.Synthesis and characterization of spinel Li4 Ti5O12 anode material by oxalic acid-assisted sol-gel method[J].Journal of Power Sources,2006,158(02):1358-1364.
[14] 邱文顺,李运姣,习小明,陈盼盼.软化学法合成锂离子电池负极材料Li4Ti5O12的研究进展[J].材料导报,2009(11):32-35.
[15] Guofeng Yan;Haisheng Fang;Huijuan Zhao .Ball milling-assisted sol-gel route to Li_4Ti_5O_(12) and its electrochemical properties[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2009(1/2):544-547.
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