摘要
通过溶胶凝胶法低温下合成了 Cr与 Mn不同计量比的一系列正极材料 Li Crx Mn2 -x O4 ,并用 DTA,TGA,TEM,XRD,FT- IR对其形貌及其结构进行了表征 .结果表明采用该方法在4 5 0℃的低温下即可得到纯相的 L i Crx Mn2 -x O4 尖晶石 ,其平均粒径均为 80 nm左右 。
A series of LiCr xMn 2-xO 4 powders with different stoichiometic ratio of Cr and Mn have been prepared by a sol-gel process. The process consisted of thermal chelating,drying,decomposion and reaction,forming a well characterized powder.The powders have been characterized by DTA,TGA,TEM,XRD and IR. It has been showed that the spinel single- phases LiCr xMn 2-xO 4 could be performed at 450℃ with the size under 100 nm.
出处
《兰州大学学报(自然科学版)》
CAS
CSCD
北大核心
2002年第5期38-43,共6页
Journal of Lanzhou University(Natural Sciences)
基金
国家自然科学基金资助项目 (6 0 1710 0 4 )