The Li3V2(PO4)3/C composites with high-rate capability prepared by a maltose-based sol-gel route

X. H. Rui; C. Li; J. Liu; T. Cheng; C. H. Chen

doi:10.1016/j.electacta.2010.05.093

The Li₃V₂(PO₄)₃/C composites with high-rate capability prepared by a maltose-based sol-gel route

X. H. Rui
, C. Li
, J. Liu
, T. Cheng
, C. H. Chen

Research output: Contribution to journal › Article › peer-review

100 Scopus citations

Abstract

The carbon coated monoclinic Li₃V₂(PO ₄)₃ (LVP/C) cathode materials are synthesized via a sol-gel method using oxalic acid as a chelating reagent and maltose as a carbon source. The effect of carbon content on the synthesis of LVP/C composites is investigated using X-ray diffraction, scanning electron microscopy, galvanostatic charge/discharge and DC resistance measurements. The results show that, among the LVP/C powders with different carbon content (5.7, 9.6, 11.6 and 15.3 wt.%), the sample with 11.6 wt.% carbon content gives rise to the corresponding (LVP/C) ∥Li half cell with a low DC resistance and superior electrochemical performance, especially with excellent rate capability. Its discharge capacity decreases by only 7.2% from 125 mAh g^-1 at 0.5 C to 116 mAh g^-1 at 5 C between 3.0 and 4.3 V. The maltose-based sol-gel method is feasible for the preparation of LVP/C composites for high power lithium ion batteries.

Original language	English
Pages (from-to)	6761-6767
Number of pages	7
Journal	Electrochimica Acta
Volume	55
Issue number	22
DOIs	https://doi.org/10.1016/j.electacta.2010.05.093
State	Published - Sep 1 2010
Externally published	Yes

Funding

This study was supported by National Science Foundation of China (grant no. 20971117 and 10979049 ) and Education Department of Anhui Province (grant no. KJ2009A142). We are also grateful to the Solar Energy Operation Plan of Academia Sinica.

Keywords

Carbon content
Lithium ion battery
Lithium vanadium phosphate
Maltose
Sol-gel method

Access to Document

10.1016/j.electacta.2010.05.093

Cite this

@article{33a6fc888d5b4af284953e3aaaa9a995,

title = "The Li3V2(PO4)3/C composites with high-rate capability prepared by a maltose-based sol-gel route",

abstract = "The carbon coated monoclinic Li3V2(PO 4)3 (LVP/C) cathode materials are synthesized via a sol-gel method using oxalic acid as a chelating reagent and maltose as a carbon source. The effect of carbon content on the synthesis of LVP/C composites is investigated using X-ray diffraction, scanning electron microscopy, galvanostatic charge/discharge and DC resistance measurements. The results show that, among the LVP/C powders with different carbon content (5.7, 9.6, 11.6 and 15.3 wt.\%), the sample with 11.6 wt.\% carbon content gives rise to the corresponding (LVP/C) ∥Li half cell with a low DC resistance and superior electrochemical performance, especially with excellent rate capability. Its discharge capacity decreases by only 7.2\% from 125 mAh g-1 at 0.5 C to 116 mAh g-1 at 5 C between 3.0 and 4.3 V. The maltose-based sol-gel method is feasible for the preparation of LVP/C composites for high power lithium ion batteries.",

keywords = "Carbon content, Lithium ion battery, Lithium vanadium phosphate, Maltose, Sol-gel method",

author = "Rui, \{X. H.\} and C. Li and J. Liu and T. Cheng and Chen, \{C. H.\}",

year = "2010",

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AU - Rui, X. H.

AU - Li, C.

AU - Liu, J.

AU - Cheng, T.

AU - Chen, C. H.

PY - 2010/9/1

Y1 - 2010/9/1

N2 - The carbon coated monoclinic Li3V2(PO 4)3 (LVP/C) cathode materials are synthesized via a sol-gel method using oxalic acid as a chelating reagent and maltose as a carbon source. The effect of carbon content on the synthesis of LVP/C composites is investigated using X-ray diffraction, scanning electron microscopy, galvanostatic charge/discharge and DC resistance measurements. The results show that, among the LVP/C powders with different carbon content (5.7, 9.6, 11.6 and 15.3 wt.%), the sample with 11.6 wt.% carbon content gives rise to the corresponding (LVP/C) ∥Li half cell with a low DC resistance and superior electrochemical performance, especially with excellent rate capability. Its discharge capacity decreases by only 7.2% from 125 mAh g-1 at 0.5 C to 116 mAh g-1 at 5 C between 3.0 and 4.3 V. The maltose-based sol-gel method is feasible for the preparation of LVP/C composites for high power lithium ion batteries.

AB - The carbon coated monoclinic Li3V2(PO 4)3 (LVP/C) cathode materials are synthesized via a sol-gel method using oxalic acid as a chelating reagent and maltose as a carbon source. The effect of carbon content on the synthesis of LVP/C composites is investigated using X-ray diffraction, scanning electron microscopy, galvanostatic charge/discharge and DC resistance measurements. The results show that, among the LVP/C powders with different carbon content (5.7, 9.6, 11.6 and 15.3 wt.%), the sample with 11.6 wt.% carbon content gives rise to the corresponding (LVP/C) ∥Li half cell with a low DC resistance and superior electrochemical performance, especially with excellent rate capability. Its discharge capacity decreases by only 7.2% from 125 mAh g-1 at 0.5 C to 116 mAh g-1 at 5 C between 3.0 and 4.3 V. The maltose-based sol-gel method is feasible for the preparation of LVP/C composites for high power lithium ion batteries.

KW - Carbon content

KW - Lithium ion battery

KW - Lithium vanadium phosphate

KW - Maltose

KW - Sol-gel method

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