氧化石墨修饰制备Sn/C复合材料及其嵌锂性质

功能材料, 2010, 41(z1): 121-125.

氧化石墨修饰制备Sn/C复合材料及其嵌锂性质

朱翔 ^1, , 郝亮 ^2, , 张校刚 ^3, , 申来法 ^4, , 蒋健伟 ^5, , 薛瑞丽 ^6, , 徐科 ^7,

1.南京航空航天大学,材料科学与技术学院,江苏,南京,210016

2.南京航空航天大学,材料科学与技术学院,江苏,南京,210016

3.南京航空航天大学,材料科学与技术学院,江苏,南京,210016

4.南京航空航天大学,材料科学与技术学院,江苏,南京,210016

5.南京航空航天大学,材料科学与技术学院,江苏,南京,210016

6.南京航空航天大学,材料科学与技术学院,江苏,南京,210016

7.南京航空航天大学,材料科学与技术学院,江苏,南京,210016

关键词： RF法 , 水热合成 , Sn/C复合物 , 氧化石墨(GO)改性 , 锂离子电池负极

Graphite oxide(GO)modified Sn/C composite for lithium ion battery anode

兼顾Sn/C复合物循环稳定性的同时为了提高其容量,采用氧化石墨(GO)修饰间苯二酚甲醛凝胶(RF)包覆SnCl4得到前驱化合物并进行水热处理制备改性Sn/C复合物.改性后Sn颗粒与碳基底之间结合更好.循环伏安曲线表明,改性的复合物中Li+在脱嵌时的不可逆变化减小;通过交流阻抗测试结果计算出Li+在改性后的复合物中有着更高的扩散系数;90次循环之后其容量仍能保持在270mAh/g以上,35次循环后的容量保持率接近100%.

参考文献

[1]	Sony-Corporation .Anode Active Material and Battery Using It[P].U S P:7229717,2005-11-08.
[2]	Hassoun J;Panero S;Scrosati B .[J].FUEL CELLS,2009,9(03):277-283.
[3]	Zou L;Gan L;Kang F et al.[J].Journal of Power Sources,2010,195(04):1216-1220.
[4]	Yang He;Ling Huang;Jin-Shu Cai;Xiao-Mei Zheng;Shi-Gang Sun .Structure and electrochemical performance of nanostructured Fe_3O_4/carbon nanotube composites as anodes for lithium ion batteries[J].Electrochimica Acta,2010(3):1140-1144.
[5]	Skowronski J M;Knofczynski K .[J].Journal of Power Sources,2009,194(01):81-87.
[6]	Kim G P;Lee J K;Lee Y J et al.[J].Journal of Nanoscience and Nanotechnology,2008,8(10):5475-5478.
[7]	Guoxiu Wang;Xiaoping Shen;Jane Yao .Graphene nanosheets for enhanced lithium storage in lithium ion batteries[J].Carbon,2009(8):2049-2053.
[8]	T. Szabo;E. Tombacz;E. Illes .Enhanced acidity and pH-dependent surface charge characterization of successively oxidized graphite oxides[J].Carbon: An International Journal Sponsored by the American Carbon Society,2006(3):537-545.
[9]	Dongxing Yang;Aruna Velamakanni;Gulay Bozoklu .Chemical analysis of graphene oxide films after heat and chemical treatments by X-ray photoelectron and Micro-Raman spectroscopy[J].Carbon: An International Journal Sponsored by the American Carbon Society,2009(1):145-152.
[10]	Hummers W S;Offeman R E .[J].Journal of the American Chemical Society,1958,80(06):1339.
[11]	Chu PK;Li LH .Characterization of amorphous and nanocrystalline carbon films[J].Materials Chemistry and Physics,2006(2/3):253-277.
[12]	Yang S;Song H;Chen X .[J].Electrochemistry Communications,2006,8:137-142.
[13]	Barral G;Diard J P;Gorree B L .[J].Journal of Applied Electrochemistry,1993,23:93-97.
[14]	Courtney IA.;Dahn JR. .ELECTROCHEMICAL AND IN SITU X-RAY DIFFRACTION STUDIES OF THE REACTION OF LITHIUM WITH TIN OXIDE COMPOSITES[J].Journal of the Electrochemical Society,1997(6):2045-2052.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

氧化石墨修饰制备Sn/C复合材料及其嵌锂性质

Graphite oxide(GO)modified Sn/C composite for lithium ion battery anode

参考文献