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Agitation drying synthesis of porous carbon supported Li3VO4 as advanced anode material for lithium-ion batteries.
- Source :
- Rare Metals; Dec2021, Vol. 40 Issue 12, p3466-3476, 11p
- Publication Year :
- 2021
-
Abstract
- Li<subscript>3</subscript>VO<subscript>4</subscript> 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<subscript>3</subscript>VO<subscript>4</subscript> composites (Li<subscript>3</subscript>VO<subscript>4</subscript>/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<subscript>3</subscript>VO<subscript>4</subscript>/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<superscript>−1</superscript> and maintains a capacity of 442.9 mAh·g<superscript>−1</superscript> after 100 cycles at 100 mA·g<superscript>−1</superscript>. Even at a high current density of 2 A·g<superscript>−1</superscript>, a considerable capacity of 243.8 mAh·g<superscript>−1</superscript> can still be obtained. This work provides a promising approach for the practical application of Li<subscript>3</subscript>VO<subscript>4</subscript> as anode material for LIBs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10010521
- Volume :
- 40
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- Rare Metals
- Publication Type :
- Academic Journal
- Accession number :
- 152013191
- Full Text :
- https://doi.org/10.1007/s12598-021-01712-5