Preparation of LiNi0.5Mn1.5O4 cathode materials by electrospinning

Preparation of LiNi0.5Mn1.5O4 cathode materials by electrospinning
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静电纺丝法制备LiNi0.5Mn1.5O4正极材料

DOI:
10.1007/s11581-016-1736-8
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发表时间:
2016-05
期刊:
影响因子:
2.8
通讯作者:
Wu Ling
Wu Ling
中科院分区:
化学4区
文献类型:
--
作者:
Zhong Shengkui;Hu Piao;Luo Xia;Zhang Xiaoping;Wu Ling

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以氢氧化锂、醋酸锰、醋酸镍、醋酸、乙醇和聚乙烯吡咯烷酮为原料,采用静电纺丝法制备了LiNi0.5Mn1.5O4正极材料。研究了焙烧温度对材料结构、形貌和电化学性能的影响。XRD结果表明,在650 °C煅烧3 h后,LiNi 0. 5 Mn 1. 5 O 4复合材料结晶良好,为尖晶石结构。SEM结果表明,该复合材料为颗粒状,平均粒径为300-500 nm。电化学性能测试表明,该复合材料在0.1和3 C倍率下分别显示出127.8和105 mAhg−1的初始放电容量,并表现出良好的循环性能。
LiNi0.5Mn1.5O4 cathode material was prepared by electrospinning using lithium hydroxide, manganese acetate, nickel acetate, acetic acid, ethanol, and poly(vinyl pyrrolidone) as raw materials. The effect of calcination temperature on the structure, morphology, and electrochemical properties was investigated. XRD results indicate that the LiNi0.5Mn1.5O4 composite is well crystallized as a spinel structure at calcination temperature of 650 °C for 3 h. SEM results reveal that this composite has a nanofiber shape with average size of about 300–500 nm. Electrochemical performance tests reveal that this composite shows the initial discharge capacity of 127.8 and 105 mAhg−1 at 0.1 and 3 C rates, respectively, and exhibits good cycling performance.
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