中文摘要：

通过固相自引发基团置换反应,流变相法和固相自引发基团置换-流变相法3种方法成功制备出LiNi1/3Co1/3Mn1/3O2材料。XRD、SEM和电化学测试表明,固-流法制备的样品具有最稳定的二维层状结构和最小的阳离子混排度及最佳的微观形貌和电化学性能。在2.8～4.3V区间内0.2、0.5、1和2C下的放电比容量分别为185.9、169.9、157.5和134.7mAh/g。0.5C下的循环测试表明,20次循环后电极的放电比容量为143.9mAh/g,容量保持率为84.7%。提高充电截止电压到4.6V,能极大地提高材料的充放电比容量,首次放电比容量为197mAh/g,同时,不可逆容量增大。

英文摘要：

Layer-structured LiNi1/3Co1/3Mn1/3O2 cathode materials were prepared successfully by self-propagating solid-state metathesis,rheological phase method and self-propagating solid-state metathesis-rheological phase method.LiNi1/3Co1/3Mn1/3O2 materials were studied by SEM,XRD and electrochemical test.The results indicate that the sample synthesized by self-propagating solid-state metathesis-rheological phase method has the best two-dimensional layered structure,cationic degree of order and uniform particle distribution.The initial specific discharge capacity is 185.9,169.9,157.5 and 134.7m Ah/g at 0.2,0.5,1,2 Crespectively,showing favorable rate electrochemical performance.The cycle test at 0.5Cshows discharge capacity retention rate is 84.7% after 20 cycles.Increasing charge cut-off voltage could improve the previous discharge capacity,and the initial discharge capacity is 197mAh/g in the voltage range of 2.8-4.6V,while the irreversible capacity presents increasing.