层状锰酸锂的制备方法研究  

Various Synthetic Processes of Layered LiMnO_2

作　　者：丰艳芳[1] 胡慧中[1] 潘保武[1] 

机构地区：[1]中北大学材料科学与工程学院,山西太原030051

出　　处：《中北大学学报（自然科学版）》2012年第2期186-189,共4页Journal of North University of China(Natural Science Edition)

基　　金：中北大学科学基金资助项目

摘　　要：层状LiMnO2被认为是最有发展前途的锂离子电池正极材料之一,是目前新能源材料研究的热点.本文研究了高温固相法+碳热还原法,离子交换法,水热合成法和流变相法等多种工艺制备层状LiMnO2,通过实验结果对比了各种制备工艺工业化的可行性,为层状LiMnO2实现商业化提出了建议.研究结果表明:水热合成法在160℃下,Li/Mn=2∶1时,可得到层状LiMnO2;而流变相法在Li/Mn=1∶1时,即可得到LiMnO2.The layered LiMnO2,being regarded as one of the most promising positive materials of lithium-ion battery,is the hot spot of new energy materials research at present.In this paper,we discuss various kinds of preparation technologies of layered LiMnO2,such as the high temperature solid phase method combined with carbon reduction method,ion-exchange method,hydrothermal synthesis method and rheological phase method.We discuss the technologies′ feasibility for industrialization,and make a proposal for the commercial development.The results from above investigation showed that the layered LiMnO2 was obtained when hydrothermal synthesis was at 160 ℃ and the ratio of Li/Mn was 2∶1.The layered LiMnO2 was obtained through rheological phase method when the ratio of Li/Mn was 1∶1.

关 键 词：锂离子电池 层状LIMNO2 正极材料 

分 类 号：O614.111[理学—无机化学] TM912.9[理学—化学]