由掺钛电解二氧化锰制备掺钛、掺镍-钛、掺钴-钛的尖晶石锂锰氧化物.充放电实验表明,在4.6~2.5V电压范围,掺杂样品的充放电性能最好.600℃掺钛样、600℃未掺杂样、750℃未掺杂样的新样的初始容量分别为205、189和207mAh/g;充电态存放3个月样品的初始容量分别为175、135和126mAh/g.40循环的容量衰减率分别为16%、47%和52%.X射线光电子能谱和红外分析表明,掺钛增强了结构中氧的结合能,明显改善了样品的放电性能和充电态的存放性能.
参考文献
[1] | Ohzuku T;Kitagawa M;Hirai T .[J].Journal of the Electrochemical Society,1990,137:769-774. |
[2] | Lee J H;Hong J K;Jang D H et al.[J].Journal of Power Sources,2000,89:7-14. |
[3] | Kumara G;Schlorb H;Rahner D .[J].Materials Chemistry and Physics,2001,70:117. |
[4] | Tabuchi M;Shigemura H;Ado K et al.[J].Journal of Power Sources,2001,97-98:415. |
[5] | Tong Q;Lian J .[J].Journal of the Electrochemical Society,1997,144(12):4110-4118. |
[6] | 童庆松;杨勇;张忠如 .[J].中国科技大学学报,2002,32(12):156-162. |
[7] | 童庆松 .掺杂锂锰氧化物正极材料的合成、结构和性能的研究[D].厦门:厦门大学,2005. |
[8] | Song G M;Wang Y J;Zhou Y .[J].Journal of Power Sources,2004,128:270-277. |
[9] | Aoshima T;Okahara K;Kiyohara C et al.[J].Journal of Power Sources,2000,97:377-380. |
[10] | Wu C.;Wu F.;Chen LQ.;Huang XJ.;Wang ZX. .Spectroscopic studies on cation-doped spinel LiMn2O4 for lithium ion batteries[J].Solid state ionics,2001(3/4):277-285. |
[11] | Hernan L.;Sanchez L.;Santos J.;Castellon ER.;Morales J. .Sol-gel derived Li-V-Mn-O spinels as cathodes for rechargeable lithium batteries[J].Solid state ionics,2000(3/4):179-188. |
[12] | Chitra S;Kalyani P;Mohan T et al.[J].Journal of Electroceramics,1999,3(04):433-441. |
[13] | Rats D;Vandenbulcke L;Herbin R.[J].Thin Solid Films,1995(270):177-183. |
[14] | Arora P;Porov B N;Write R E .[J].Journal of the Electrochemical Society,1998,145:807-814. |
[15] | He L;Tang S;Chen Z et al.[J].Solar Energy Materials and Solar Cells,2000,62:117-123. |
[16] | Banov B;Momchilov A;Massot M et al.[J].Materials Science and Engineering B,2003,100(01):87-92. |
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