以硝酸锂、硝酸锰和柠檬酸为原料,采用溶胶-凝胶法制备成前驱体,将该前驱体在空气环境下燃烧得到的粉料在600～900C焙烧一定时间得到尖晶石型晶体结构的LiMn2O1(空间群为Fd3m).利用X射线衍射(XRD)、扫描电镜(SEM)、热重-差热分析(TG/DTA)对前驱体及合成的样品进行了测试分析和表征.研究了焙烧温度、时间以及锂锰摩尔比(n(Li)/n(Mn))R等对合成样品的相组成、晶体结构和微观形貌等的影响.合成高纯尖晶石型LiMn2O4的优化条件为焙烧温度800℃,焙烧时间10h,R=1.1/2.
参考文献
| [1] | Z.S.Wronski .Materials for rechargeable batteries and clean hydrogen energy sources[J].International Materials Reviews,2001(1):1-49. |
| [2] | Yen-Pei Fu;Yu-Hsiu Su;Cheng-Hsiung Lin .Comparison of the microwave-induced combustion and solid-state reaction for the synthesis of LiMn_2O_4 powder and their electrochemical properties[J].CERAMICS INTERNATIONAL,2009(8):3463-3468. |
| [3] | 刘兴泉,刘培松,陈召勇,陈栋梁,张伯兰,李庆,于作龙.锂离子电池正极材料LiMn2O4的合成及其电化学性能研究[J].功能材料,2001(02):178-180. |
| [4] | Kalyani P;Kalaiselvi N;Muniyandi N .A new solution combustion route to synthesize LiCoO2 and LiMn2O4[J].Journal of Power Sources,2002,111(02):232-238. |
| [5] | M.Mohan Rao;C.Liebenow;M.Jayalakshmi;H.Wulff;U.Guth;F.Scholz .High-temperature combustion synthesis and electrochemical characterization of LiNiO_2, LiCoO_2 and LiMn_2O_4 for lithium-ion secondary batteries[J].Journal of solid state electrochemistry,2001(5):348-354. |
| [6] | H.M. Wu;J.R. Tu;Y.R. Yuan .One-step synthesis LiMn_2O_4 cathode by a hydrothermal method[J].Journal of Power Sources,2006(2):1260-1263. |
| [7] | Fang H S;Li L P;Li G S .A low-temperature reaction route to high rate and high capacity LiNi0.s Mn1.5O4[J].Journal of Power Sources,2007,167(01):223-227. |
| [8] | Yi T F;Hu X G .Preparation and characterization of submicro LiNi0.5 x Mn1.5+x O4 for 5V cathode materials synthesized by an ultrasonic-assisted co-precipitation method[J].Journal of Power Sources,2007,167(01):185-191. |
| [9] | 杨文胜,刘庆国.尖晶石型LiMn2O4电极材料的制备及性能研究[J].北京化工大学学报,2000(01):66-69. |
| [10] | Wensheng Yang;Gang Zhang;Jingying Xie;Leiling Yang .A combustion method to prepare spinel phase LiMn_2O_4 cathode materials for lithium-ion batteries[J].Journal of Power Sources,1999(0):412-415. |
| [11] | J.-H. Choy;D.-H. Kim;C.-W. Kwon .Physical and electrochemical characterization of nanocrystalline LiMn_2O_4 prepared by a modified citrate route[J].Journal of Power Sources,1999(1):1-11. |
| [12] | Yang-Kook Sun;Dong-Won Kim;Young-Min Choi .Synthesis and characterization of spinel LiMn_2-xNi_xO_4for lithium/polymer battery applications[J].Journal of Power Sources,1999(2):231-237. |
| [13] | 应皆荣,张国昀,姜长印,万春荣.溶胶凝胶法制备尖晶石型LiMn2O4的研究现状及展望[J].功能材料,2001(03):234-236. |
| [14] | Liu W.;Farrington GC.;Kowal K. .ELECTROCHEMICAL CHARACTERISTICS OF SPINEL PHASE LIMN2O4-BASED CATHODE MATERIALS PREPARED BY THE PECHINI PROCESS - INFLUENCE OF FIRING TEMPERATURE AND DOPANTS[J].Journal of the Electrochemical Society,1996(11):3590-3596. |
| [15] | Chick L A;Pederson L R;Maupin et al.Glycine-ni-trate combustion synthesis of oxide ceramic powders[J].Materials Letters,1990,10(1-2):6-12. |
| [16] | 吴建波,麻晓霞,龚波林,黄可龙.凝胶燃烧法合成尖晶石LiMn2O4粉体及其表征[J].宁夏工程技术,2007(04):364-367. |
| [17] | 钟清华,袁中直,王辉,黄斯聘,杜锐.凝胶-燃烧法合成锂离子LiAl0.1Mn1.9O4[J].华南师范大学学报（自然科学版）,2008(01):93-97. |
| [18] | P. Lucas;C. A. Angell .Synthesis and Diagnostic Electrochemistry of Nanocrystalline Li_(1+x)Mn_(2-x)O_4 Powders of Controlled Li Content[J].Journal of the Electrochemical Society,2000(12):4458-4463. |
| [19] | 钟盛文,李培植,梅桂,李艳,胡杨,刘庆国.不同锂锰比尖晶石型LiMn2O4的结构与电化学性能的分析[J].电源技术,2006(05):366-369,373. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%