静电纺丝制备富锂锰基锂电正极材料及其性能  

Electrospinning preparation and performance of lithium-rich manganese-based lithium ion battery cathode material

作　　者：李永亮[1] 马定涛 张培新[1] 

机构地区：[1]深圳大学化学与环境工程学院,广东深圳518060

出　　处：《深圳大学学报（理工版）》2017年第2期132-137,共6页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金资助项目(51374146);深圳市科技基础研究计划资助项目(JCYJ20140418095735619)~~

摘　　要：通过静电纺丝技术制备了具有一维管状结构的Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_2正极材料,研究了煅烧温度对电极材料表面形貌和电化学性能的影响.结果表明,煅烧温度为850℃时所制产物具有较好的离子扩散性能,在50 m Ah·g^(-1)的电流密度下首次放电比容量为249.5 m Ah·g^(-1),50次循环后的容量保持率为87%,表现出较高的放电比容量和较好的循环稳定性.One-dimensional tube-like structure of Lil.2 Mno.54 Nio.13 C00.13 02 cathode material was synthesized by electrospinning. The effects of calcination temperature on the morphology and electrochemical performance of the battery cathode material were studied. The results show that the sample synthesized at 850 ~C possesses a relatively high discharge capacity and good cyclic stability, which delivers 249.5 mAh-g-I at the first cycle and remains 87% retention after 50 cycles at the current density of 50 mAh.g- 1, owing to a relatively high ionic diffusion capability.

关 键 词：应用化学 静电纺丝 富锂锰基 管状结构 煅烧温度 电化学性能 

分 类 号：O69[理学—化学]