氧化物熔融浸渍法包覆LiNi0.4Co0.2Mn0.4O2的电化学性能研究

材料导报, 2008, 22(z1): 258-263.

氧化物熔融浸渍法包覆LiNi0.4Co0.2Mn0.4O2的电化学性能研究

张进 ^1, , 曹高劭 ^2, , 涂江平 ^3, , 赵新兵 ^4,

1.浙江大学材料系,杭州,310027

2.浙江大学材料系,杭州,310027

3.浙江大学材料系,杭州,310027

4.浙江大学材料系,杭州,310027

基金项目: 浙江省科技计划(2007C21100)

关键词： LiNi0.4Co0.2Mn0.4O2 , 锂离子电池 , 正极材料 , 熔融浸渍法 , 氧化物包覆

Research on Electrochemical Properties of Metal Oxides Coated LiNi0.4 Co0.2 Mn0.4 O2 by Melting Impregnation

以提高锂离子电池正极材料LiNi0.4Co0.2Mn0.4O2的循环性能为目的,采用熔融浸渍法制备了Al2O3和ZnO表面包覆的LiNi0.4Co0.2Mn0.4O2正极材料.微观组织结构分析结果表明,包覆后LiNi0.4Co0.2Mn0.4O2颗粒表面形成了一层厚度不均匀的纳米氧化物.电化学测试表明,ZnO和Al2O3包覆提高了材料的循环稳定性,在1C恒流充放电循环50次后容量保持率由包覆前的79.7%分别提高到88.4%和100%.

参考文献

[1]	禹筱元,胡国荣,刘业翔.层状LiNixCo1-x-yMnyO2的合成及改性进展[J].电池,2006(01):64-66.
[2]	Kim Y;Kira H S;Martin S W .[J].Electrochimica Acta,2006,52(03):1316.
[3]	Li D C et al.[J].Journal of Power Sources,2006,160(02):1342.
[4]	Smart M C;Whitacre J F;Ramakumar B V et al.[J].Journal of Power Sources,2007,168(02):501.
[5]	Liang YG;Han XY;Zhou XW;Sun JT;Zhou YH .Significant improved electrochemical performance of Li(Ni1/3Co1/3Mn1/3)O-2 cathode on volumetric energy density and cycling stability at high rate[J].Electrochemistry communications,2007(5):965-970.
[6]	Jang S B;Kang S H;Amine K et al.[J].Electrochimica Acta,2005,50(20):4168.
[7]	Na SH;Kim HS;Moon SI .The effect of Si doping on the electrochemical characteristics of LiNixMnyCo((1-x-y))O-2[J].Solid state ionics,2005(3/4):313-317.
[8]	Ma M;Chemova N A;Toby B H et al.[J].Journal of Power Sources,2007,165(02):517.
[9]	Li D C;Noguchi H;Yoshio M .[J].Electrochimica Acta,2004,50(2-3):427.
[10]	黄原君,苏光耀,雷钢铁,高德淑,李朝晖,陈平.多元复合正极材料LiNi1/3Co1/3Mn1/3O2的研究进展[J].材料导报,2006(z1):285-287.
[11]	Kageyama M;Li D C;Kobayakawa K et al.[J].Journal of Power Sources,2006,157(01):494.
[12]	Kim H S;Kim Y;Kim S I et al.[J].Journal of Power Sources,2006,161(01):623.
[13]	Zhang Z R;Liu H S;Gong Z L et al.[J].Journal of Power Sources,2004,129(01):101.
[14]	Tu J;Zhao X B;Xie J et al.[J].Journal of Alloys and Compounds,2007,432(1-2):313.
[15]	Oh S et al.[J].Journal of Power Sources,2004,132(1-2):249.
[16]	袁超群,李道聪,沈玉芳,彭正合,周运鸿.锂离子电池正极材料LiNi0.75-xCoxMn0.25O2的合成及电化学性能研究[J].无机化学学报,2006(09):1645-1650.
[17]	Cho T H;Shiosaki Y;Noguchi H .[J].Journal of Power Sources,2006,159(02):1322.
[18]	Park S H;Yoon S C;Kang S G et al.[J].Electrochimica Acta,2004,49(04):557.
[19]	Tan K S;Reddy M V;Rao G V et al.[J].Journal of Power Sources,2005,141(01):129.

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

氧化物熔融浸渍法包覆LiNi0.4Co0.2Mn0.4O2的电化学性能研究

Research on Electrochemical Properties of Metal Oxides Coated LiNi0.4 Co0.2 Mn0.4 O2 by Melting Impregnation

参考文献