软溶胶——凝胶法制备LiCoO_2薄膜  

Fabrication of LiCoO_2 thin Films by Soft Solution Processing

作　　者：陶颖[1] 陈振华[1] 黄尉庄[1] 

机构地区：[1]中南工业大学非平衡材料科学与工程研究所,长沙410083

出　　处：《材料科学与工程》2001年第4期29-31,41,共4页Materials Science and Engineering

基　　金：.NULL.

摘　　要：层次LiCoO2 作为锂离子电池的正极材料 ,多以固态煅烧和液相合成为主。本文采用软溶胶—凝胶技术在浓LiOH溶液中一步合成LiCoO2 薄膜。由XRD、SEM、AAS等测试方法可知LiCoO2 晶体结构好 ,薄膜致密、无明显的孔隙和缺陷 ,其厚度为 30 μm。作者还对薄膜形成机理作了一定的探讨。合成薄膜的条件是 :4MLiOH液、10 0℃的饱和蒸气压、电流密度为 0～ 10mA cm2 、2The layered LiCoO 2 compounds as cathodes for Li ion batteries were synthesized on cobalt substrates by soft solution processing in 4M LiOH solution at 100℃ without any postsynthesis annealing.Their structre and chemical composition were checked by X ray diffraction,scanning electrn microscopy,and atomic absorption spectroscopy pattern analysis.The prepared LiCoO 2 films show good crystallinity and its thickness of ca 30μm.The reaction mechanism could explaine the whole process of soft solution processing.

关 键 词：软溶胶-凝胶法 LiCoO2薄膜 锂离子电池 制备 正极材料 氧化锂 氧化钴 复合氧化物 陶瓷薄膜 

分 类 号：TM912[电气工程—电力电子与电力传动] TM2[一般工业技术—材料科学与工程]