| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8017170 | Materials Letters | 2016 | 4 Pages |
Abstract
Nanoporous spherical Li1.95Na0.05FeSiO4/C and Li2FeSiO4/C composites have been synthesized through a spray drying-assisted method. The effect of Na doping on the physicochemical properties of Li2FeSiO4 is extensively investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscope, AC impedance spectroscopy, four-point measurement and galvanostatic charge-discharge testing. It is found that Li1.95Na0.05FeSiO4/C composite exhibits superior rate capability and cycling stability. Remarkably, even rate increases to 10C, a high discharge capacity of 110 mAh gâ1 is obtained, and 97.8% of its initial value is retained after 100 cycles at 2C. The excellent electrochemical properties were mainly attributed to enhancement of electronic conductivity and reduction of charge transfer resistance.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Yurong Ren, Peng Lu, Xiaobing Huang, Jianning Ding, Haiyan Wang, Shibiao Zhou, Yuandao Chen, Xiang Ding,