Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7888243 | Ceramics International | 2018 | 19 Pages |
Abstract
Lithium vanadium fluorophosphate (LiVPO4F) has been attracted increasing attention as an advanced cathode for Li-ion batteries because of its excellent thermal stability and high operating voltage. Nevertheless, the pure LiVPO4F possesses a low electrical conductivity which prevents its usage for practical application in energy storage. In this work, the CNTs-decorated LiVPO4F/C (CNTs@LiVPO4F/C) nanocomposite has been prepared via a conventional sol-gel approach. The XRD results reveal that all the diffraction peaks obtained for CNTs@LiVPO4F/C are indexed to the triclinic structure. TEM images show that the conductive CNTs are distributed homogeneously over the LiVPO4F/C particles. Benefiting from the enhanced conductivity, the as-prepared CNTs@LiVPO4F/C electrode exhibits outstanding electrochemical performance with high reversible capacity of 121.1 mAh gâ1 at a high current rate of 10Â C. Therefore, the novel CNTs@LiVPO4F/C cathode material developed from this investigation with superior Li-storage performance has promising practical applications in electrochemical energy storage systems.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Xujiao Yang, Xianli Wang, Kaiying Wang, Guangli Chang,