摘要
用柠檬酸凝胶法和草酸凝胶法制备了尖晶石LiMnO4 ,用X -射线衍射、透射电镜 ,差热分析和充放电测试研究了样品的结构和性能。依据Scherre公式计算出样品粒径在 2 8 5～ 34 2mm之间 ,75 0℃焙烧 4h制备样品的初充放电容量为 114 3mAh/g .
The spinel LiMn 2O 4 samples are prepared by a modified gel method of citric acid and oxalic acid.The influences of temperature on the structure of the products have been investigated.Their structures and chemical performances are studied by using X-ray diffraction,TEM,TG/DTA and charge -discharge measurements.The particle sizes are determined as between 28.5～34.2 mm by the Scherre Calculation.The LiMn 2O 4 powder obtained by heating at 750℃ for 4 hours yields a high initial capacity of 114.3 mAh/g.
出处
《贵州师范大学学报（自然科学版）》
CAS
2001年第3期49-51,共3页
Journal of Guizhou Normal University：Natural Sciences
基金
贵州省教委资助项目
关键词
尖晶石
凝胶法
制备
草酸
柠檬酸
锂离子电池
spinel LiMn 2O 4
gel method
preparation
oxalic acid
citric acid
