Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6578475 | Chemical Engineering Journal | 2018 | 22 Pages |
Abstract
Hollow irregular octahedra-like NiCo2O4 cages composed of mesoporous nanosheets have been prepared by a facile template-assisted strategy under the auxiliary action of hydroxypropyl cellulose. As an anode material for lithium ion batteries, such a hierarchical hollow nanostructure can greatly alleviate volume change and effectively shorten lithium ion diffusion distance, as a result, it exhibits superior lithium ion storage performance with excellent cyclability and great rate capability. A reversible charge capacity of 903â¯mAhâ¯gâ1 at 0.2â¯Aâ¯gâ1 is obtained in the first cycle, and 85.3% of the 2nd discharge capacity is retained after 300 cycles at 0.5â¯Aâ¯gâ1. After tested at various current densities from 0.2 to 1.4â¯Aâ¯gâ1, the reversible capacity can recover to 885â¯mAhâ¯gâ1 at 0.2â¯Aâ¯gâ1. These results suggest a promising application for advanced energy storage units.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Xiaoyi Hou, Song Xue, Mengting Liu, Xiaonan Shang, Yujun Fu, Deyan He,