Synthesis and Electrochemical Characterization of a Novel Ternary Composite, Containing xLiFeO2, yLiCoO2, and [1 – (x + y)]LiNi1/2Mn1/2O2, Composites for Cathode Material in Lithium Ion Batteries (LIBs)
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引用次数: 0
Abstract
The objective of this research is to prepare a composite with lower cost and better cyclability than the other cathode materials in lithium ion battery. A ternary composition with high efficiency and low cost containing LiFeO2 and LiNi1/2Mn1/2O2, was applied instead of pure LiCoO2 to reduce usage of the percentage Co amount in cathode materials of LIBs, consequently a benefit would be yielded by reducing the cost of cobalt and also by removing its toxic effect in LIBs the environment will be safe. In this study, we synthesized ten samples from mixture of xLiFeO2, yLiCoO2, and (1 – x – y)LiNi1/2Mn1/2O2 compounds for preparing suitable cathode electrodes with high initial discharge capacity, large cyclability and inexpensive cost instead of traditional cathode materials. As a result by using Raman Analysis, X-ray diffraction, and electrochemical analyzing, we found that the LiNi1/6Mn1/6Fe1/3Co1/3O2 composite has high efficiency and best performance in viewpoint of initial capacity, cyclability, charge capacity, and discharge capacity among these ten composites.
本研究的目的是制备一种比锂离子电池正极材料成本更低、可循环性更好的复合材料。采用含有LiFeO2和LiNi1/2Mn1/2O2的高效低成本三元组合物代替纯LiCoO2,减少了锂离子电池正极材料中Co的百分比用量,从而降低了钴的成本,并消除了钴在锂离子电池中的毒性作用,保证了环境安全。本研究以xLiFeO2、yLiCoO2和(1 - x - y)LiNi1/2Mn1/2O2化合物的混合物合成了10个样品,制备了初始放电容量高、可循环性大、成本低廉的阴极电极,取代了传统的阴极材料。结果,通过拉曼分析、x射线衍射和电化学分析,我们发现LiNi1/6Mn1/6Fe1/3Co1/3O2复合材料在初始容量、可循环性、充电容量和放电容量方面具有较高的效率和最佳的性能。
期刊介绍:
Russian Journal of Electrochemistry is a journal that covers all aspects of research in modern electrochemistry. The journal welcomes submissions in English or Russian regardless of country and nationality of authors.