Agitation drying synthesis of porous carbon supported Li3VO4 as advanced anode material for lithium-ion batteries

Li 3 VO 4 has been considered as a promising insertion-type anode for lithium-ion batteries due to its high theoretical specific capacity and suitable operating voltage platform. However, this promising anode still suffers from poor electrical conductivity. To address this issue, herein, a porous ca...

Full description

Saved in:
Bibliographic Details
Published in:Rare metals 2021-12, Vol.40 (12), p.3466-3476
Main Authors: Gou, Wen-Wen, Zhou, Shuang, Cao, Xin-Xin, Luo, Yi-Lin, Kong, Xiang-Zhong, Chen, Jing, Xie, Xue-Fang, Pan, An-Qiang
Format: Article
Language:English
Subjects:
Agitation
Anodes
Biomaterials
Carbon
Carbon content
Chemistry and Materials Science
Discharge
Drying
Electrical resistivity
Electrode materials
Energy
Lithium
Lithium-ion batteries
Materials Engineering
Materials Science
Metallic Materials
Nanoscale Science and Technology
Original Article
Physical Chemistry
Rechargeable batteries
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Li 3 VO 4 has been considered as a promising insertion-type anode for lithium-ion batteries due to its high theoretical specific capacity and suitable operating voltage platform. However, this promising anode still suffers from poor electrical conductivity. To address this issue, herein, a porous carbon supported Li 3 VO 4 composites (Li 3 VO 4 /C) via a facile agitation-drying method combined with subsequent calcination is reported, in which Ketjen black carbon with high porosity, easy dispersion and excellent conductivity can serve as one of carbon sources. The Li 3 VO 4 /C composite prepared at 700 °C with a carbon content of ~ 10% exhibits the optimized structure. The void space of the composite accommodates the volume changes during the charge/discharge process. Meanwhile, the carbon shell serves as a conductive skeleton to provide bi-continuous Li ions and electrons pathways. Electrochemical results reveal that the composite delivers a high initial discharge capacity of 572 mAh·g −1 and maintains a capacity of 442.9 mAh·g −1 after 100 cycles at 100 mA·g −1 . Even at a high current density of 2 A·g −1 , a considerable capacity of 243.8 mAh·g −1 can still be obtained. This work provides a promising approach for the practical application of Li 3 VO 4 as anode material for LIBs. Graphic Abstract
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-021-01712-5