采用碳热还原法由LiOH、MnO2直接合成了层状IAMnO2(o-LiMnO2).采用了X射线衍射(XRD)、扫描电子显微镜(SEM)等手段对产物的结构和微观形貌进行了表征,同时通过充放电测试考察了所得样品的电化学性能.结果表明,以Li:Mn:C摩尔比为5:4:2,300℃恒温碳化后于750℃下焙烧12h为合成o-LiMnO2样品的最佳条件;所得样品具有良好的电化学性能和循环稳定性.
参考文献
| [1] | 叶尚云,张平伟,乔芝郁.层状Ni-Mn基锂离子电池正极材料进展[J].稀有金属,2005(03):328-338. |
| [2] | 李枝贤,韩坤明,鲁道荣,陈先海.高容量锂离子电池正极材料Li1+xV3O8的制备及改性研究[J].金属功能材料,2007(04):15-18. |
| [3] | 胡学山,孙玉恒,吁霁,刘东强,林晓静,刘兴泉.锂离子电池正极材料层状LiMn02的掺杂改性[J].化学通报（印刷版）,2005(07):497-503. |
| [4] | Myung ST.;Komaba S.;Kumagai N. .Synthetic optimization of orthorhombic LiMnO2 by emulsion-drying method and cycling behavior as cathode material for Li-ion battery[J].Solid state ionics,2002(3/4):199-205. |
| [5] | Li X L;Wang W D.Structural and electrochemical characterization of LiFePO4/C prepared by a sol-gel route with long-and short-chain carbon sources[J].Journal of Solid State Electrochemistry,2009(13):921. |
| [6] | Kim J M;Chung H T .Electrochemical characteristics of orthorhombic LiMnO2 with different degrees of stacking fauhs[J].Journal of Power Sources,2003,115(01):125. |
| [7] | Wei YJ;Ehrenberg H;Bramnik NN;Nikolowski K;Baehtz C;Fuess H .In situ synchrotron diffraction study of high temperature prepared orthorhombic LiMnO2[J].Solid state ionics,2007(3/4):253-257. |
| [8] | Wu S H;Yu M T .Preparation and characterization of o-LiMnO2 cathode materials[J].Journal of Power Sources,2007,165(02):660. |
| [9] | C. Li;H. R. Zhang;H. Liu;Y. R. Wu;E. Rahm;R. Holze;H. Q. Wu .Cathode materials modified by surface coating for lithium ion batteries[J].Electrochimica Acta,2006(19):3872-3883. |
| [10] | 刘玉革,黄可龙,刘素琴.层状正极材料LiMnO2制备及电化学性能研究[J].电源技术,2004(06):331-333,341. |
| [11] | Seong-Ju Hwang;Hyo-Suk Park;Jin-Ho Choy;Guy Campet .Evolution of Local Structure around Manganese in Layered LiMnO_2 upon Chemical and Electrochemical Delithiation/Relithiation[J].Chemistry of Materials,2000(7):1818-1826. |
| [12] | 雷太鸣,汤昊,张克立.层状LiMnO2的软化学法合成及电化学性能的研究[J].武汉大学学报(理学版),2004(02):165-168. |
| [13] | Capitaine F.;Delmas C.;Gravereau P. .A NEW VARIETY OF LIMNO2 WITH A LAYERED STRUCTURE[J].Solid state ionics,1996(3/4):197-202. |
| [14] | Chitrakar R;Sakane K et al.Synthesis of orthorhombic by solid-phase reaction under steam atmosphere and a study of its heat and acid-treated phases[J].Journal of Solid State Chemistry,2002,169(01):66. |
| [15] | 范广新,曾跃武,吕光烈,陈荣升.流变相法一步合成正交LiMnO2的结构和性能[J].材料科学与工程学报,2008(01):35-38. |
| [16] | Komaba S.;Myung ST.;Kumagai N.;Kanouchi T.;Oikawa K.;Kamiyama T. .Hydrothermal synthesis of high crystalline orthorhombic LiMnO2 as a cathode material for Li-ion batteries[J].Solid state ionics,2002(Pt.A):311-318. |
| [17] | Jang YI.;Chou FC.;Huang BY.;Sadoway DR.;Chiang YM. .Magnetic characterization of orthorhombic LiMnO2 and electrochemically transformed spinel LixMnO2 (x < 1)[J].The journal of physics and chemistry of solids,2003(12):2525-2533. |
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