Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7738970 | Journal of Power Sources | 2014 | 9 Pages |
Abstract
Li-rich layer-structure xLi2MnO3·(1 â x)LiNi1/3Co1/3Mn1/3O2 (x = 0.2, 0.4, 0.6, 0.8) cathode materials have been synthesized by co-precipitation and microwave hydrothermal (MH) method in a short time (â¼60 min). The crystal structure is characterized by X-ray diffraction (XRD) patterns, and refined by two sets of diffraction data (R-3m and C2/m). The morphology is characterized by scanning and high-resolution transmission electron microscope (SEM and HRTEM) which shows the average particle size (50-100 nm). The charge/discharge results indicate xLi2MnO3·(1 â x)LiNi1/3Co1/3Mn1/3O2 (x = 0.4) synthesized at 180 °C for 60 min has the best discharge capacity and cyclic performance. Within the cut-off voltage between 2.5 and 4.8 V, the initial discharge capacity is 325 mA h gâ1 at 0.1 C rate; and after 50 cycles the discharge capacity remains 234.5 mA h gâ1. The xLi2MnO3·(1 â x)LiNi1/3Co1/3Mn1/3O2 prepared by facile and rapid microwave-assisted hydrothermal (MH) is a promising preparation method in cathode material for lithium ion batteries.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Xiaowei Miao, Yuan Yan, Chunguang Wang, Leilei Cui, Jianhui Fang, Gang Yang,