Structural characterization and electrochemical performance of lithium trivanadate synthesized by microwave sol-gel method

Feng Wu; Lian Wang; Chuan Wu; Ying Bai

doi:10.1016/j.electacta.2009.03.061

Structural characterization and electrochemical performance of lithium trivanadate synthesized by microwave sol-gel method

Feng Wu, Lian Wang, Chuan Wu^*, Ying Bai

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

44 Citations (Scopus)

Abstract

The Li_1+xV₃O₈ material was successfully synthesized at 450 °C in short sintering duration by microwave sol-gel route. X-ray diffraction suggests oxygen defects in the lattice. Based on Randles-Sevcik formula, cyclic voltammograms measurements were conducted to measure Li⁺ ion diffusion coefficient. The material exhibits high discharge capacity of 250 mA g^-1 at 0.2 mA/cm² after 30 cycles in the range of 2.0-4.0 V. Alternating current impedance tests show that the growth of the charge transfer resistance at 0.4 mA/cm² is more rapid than that of at 0.2 mA/cm² as the galvanostatical charge-discharge continues.

Original language	English
Pages (from-to)	4613-4619
Number of pages	7
Journal	Electrochimica Acta
Volume	54
Issue number	20
DOIs	https://doi.org/10.1016/j.electacta.2009.03.061
Publication status	Published - 1 Aug 2009

Keywords

Cathode material
Electrochemical properties
Lithium trivanadate
Microwave sol-gel route
Rechargeable batteries

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10.1016/j.electacta.2009.03.061

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title = "Structural characterization and electrochemical performance of lithium trivanadate synthesized by microwave sol-gel method",

abstract = "The Li1+xV3O8 material was successfully synthesized at 450 °C in short sintering duration by microwave sol-gel route. X-ray diffraction suggests oxygen defects in the lattice. Based on Randles-Sevcik formula, cyclic voltammograms measurements were conducted to measure Li+ ion diffusion coefficient. The material exhibits high discharge capacity of 250 mA g-1 at 0.2 mA/cm2 after 30 cycles in the range of 2.0-4.0 V. Alternating current impedance tests show that the growth of the charge transfer resistance at 0.4 mA/cm2 is more rapid than that of at 0.2 mA/cm2 as the galvanostatical charge-discharge continues.",

keywords = "Cathode material, Electrochemical properties, Lithium trivanadate, Microwave sol-gel route, Rechargeable batteries",

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AU - Wu, Feng

AU - Wang, Lian

AU - Wu, Chuan

AU - Bai, Ying

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AB - The Li1+xV3O8 material was successfully synthesized at 450 °C in short sintering duration by microwave sol-gel route. X-ray diffraction suggests oxygen defects in the lattice. Based on Randles-Sevcik formula, cyclic voltammograms measurements were conducted to measure Li+ ion diffusion coefficient. The material exhibits high discharge capacity of 250 mA g-1 at 0.2 mA/cm2 after 30 cycles in the range of 2.0-4.0 V. Alternating current impedance tests show that the growth of the charge transfer resistance at 0.4 mA/cm2 is more rapid than that of at 0.2 mA/cm2 as the galvanostatical charge-discharge continues.

KW - Cathode material

KW - Electrochemical properties

KW - Lithium trivanadate

KW - Microwave sol-gel route

KW - Rechargeable batteries

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Structural characterization and electrochemical performance of lithium trivanadate synthesized by microwave sol-gel method

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Keywords

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