MWCNT synergy for boosting the electrochemical kinetics of V2O5 cathode for lithium-ion batteries

Nanomaterial synergy in a hybrid system offers an unprecedented opportunity for the development of high-performance energy storage devices. In this work, to intrinsically boost the lithium storage properties of layered structure V2O5, hybrid systems involving V2O5/MWCNTs are synthesized and investig...

Full description

Saved in:
Bibliographic Details
Published in:New journal of chemistry 2022-02, Vol.46 (7), p.3417-3425
Main Authors: Hamna Mustafa, Yu, Yanlong, Zafar, Amina, Liu, Yanguo, Shafqat Karim, Javed, Saqib, Mehboob, Sheeraz, Sun, Hongyu, Hussain, Shafqat, Shah, Atta Ullah, Syed Zahid Hussain, Safdar, Amna, Nisar, Amjad, Ahmad, Mashkoor
Format: Article
Language:English
Subjects:
Cathodes
Density functional theory
Diffusion rate
Discharge
Electrochemical impedance spectroscopy
Electrode materials
Electrodes
Energy storage
Hybrid systems
Ion diffusion
Kinetics
Lithium
Lithium-ion batteries
Nanomaterials
Rechargeable batteries
Vanadium pentoxide
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nanomaterial synergy in a hybrid system offers an unprecedented opportunity for the development of high-performance energy storage devices. In this work, to intrinsically boost the lithium storage properties of layered structure V2O5, hybrid systems involving V2O5/MWCNTs are synthesized and investigated as cathode materials for lithium-ion batteries. It is found that the V2O5/MWCNT electrode demonstrates a higher initial discharge capacity of 329 mA h g−1 with a coulombic efficiency of 97% at 0.1C between 1.5 V and 4.2 V versus Li/Li+. The developed electrode delivers a reversible capacity of 217 mA h g−1 at 0.1C after 100 cycles and 106 mA h g−1 at 1C after 500 cycles with a capacity retention rate of 84.7% and 80.9% respectively. In addition, electrochemical impedance spectroscopy (EIS) and density functional theory (DFT) confirm the enhanced kinetics of the V2O5/MWCNT electrode. The improved and efficient performance of the electrode is due to the synergy between V2O5 and MWCNTs, which facilitates a convenient path for fast Li+ ion diffusion and reduces the strain generated during the charge/discharge process. This work suggests that the reported V2O5/MWCNT hybrid system can be utilized as a cathode for the construction of LIBs with high-rate capability and long cycle life.
ISSN:1144-0546
1369-9261
DOI:10.1039/d1nj06245j