欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
以过渡金属乙酸盐和乙酸锂为原料,柠檬酸为螯合剂,通过溶胶-凝胶法结合高温煅烧法制备了锂离子电池富锂锰基正极材料xLi2MnO3·（1-x）Li[Ni1/3Mn1/3Co1/3]O2,采用X射线衍射（XRD）,扫描电子显微镜（SEM）和电化学性能测试对所得样品的结构,形貌及电化学性能进行了表征.结果表明：x=0.5时,在900°C下煅烧12h得到颗粒均匀细小的层状xLi2MnO3·（1-x）Li[Ni1/3Mn1/3Co1/3]O2材料,并具有良好的电化学性能,在室温下以20mA·g^-1的电流密度充放电,2.0-4.8V电位范围内首次放电比容量高达260.0mAh·g^-1,循环40次后放电比容量为244.7mAh·g^-1,容量保持率为94.12%.
英文摘要：
The lithium rich cathode materials xLi2MnO3·（1-x）Li[Ni1/3Mn1/3Co1/3]O2 （x=0.4,0.5,0.6）were successfully synthesized via sol-gel method with calcination in air.The transition metal acetate,lithium acetate,and citric acid were used as raw materials.The as-prepared materials were characterized by X-ray diffraction（XRD）,scaning electron microscopy（SEM）,and electrochemical tests.The material 0.5Li2MnO3·0.5LiNi1/3Mn1/3Co1/3]O2 ,which was obtained after calcination at 900°C for 12 h,exhibited fine microstructures and good electrochemical performance.When cycled at 2.0-4.8 V with a current density of 20 mA·g^-1 at room temperature,0.5Li2MnO3·0.5LiNi1/3Mn1/3Co1/3]O2 delivered a initial discharge specific capacity of 260.0 mAh·g^-1 ,and maintained a capacity of 244.7 mAh·g^-1 after 40 cycles（capacity retention 94.12%）.
同期刊论文项目
同项目期刊论文
Hierarchical Li 1.2 Ni 0.2 Mn 0.6 O 2 Nanoplates with Exposed {010} Planes as High-Performance Catho
Lithium-active molybdenum trioxide coated LiNi0.5Co0.2Mn0.3O2 cathode material with enhanced electro
期刊信息
位置：