Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7734405 | Journal of Power Sources | 2015 | 7 Pages |
Abstract
Developing advanced electrode materials that deliver high energy at ultra-fast charge and discharge rates are very crucial to meet an increasing large-scale market demand for high power lithium ion batteries (LIBs). A three-dimensional (3D) nanoflower structure is successfully developed in the large-scale synthesis of LiNi1/3Co1/3Mn1/3O2 material for the first time. The fast co-precipitation is the key technique to prepare the nanoflower structure in our method. After heat treatment, the obtained LiNi1/3Co1/3Mn1/3O2 nanoflowers (NL333) pronouncedly present a pristine flower-like nano-architecture and provide fast pathways for the transport of Li-ions and electrons. As a cathode material in a LIB, the prepared NL333 electrode demonstrates an outstanding high-rate capability. Particularly, in a narrow voltage range of 2.7-4.3 V, the discharge capacity at an ultra-fast charge-discharge rate (20C) is up to 126 mAh gâ1, which reaches 78% of that at 0.2C, and is much higher than that (i.e., 44.17%) of the traditional bulk LiNi1/3Co1/3Mn1/3O2.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Wei-Bo Hua, Xiao-Dong Guo, Zhuo Zheng, Yan-Jie Wang, Ben-He Zhong, Baizeng Fang, Jia-Zhao Wang, Shu-Lei Chou, Heng Liu,