Rate performance of Li 3V 2(PO 4) 3/C cathode material and its Li + ion intercalation behavior

Feng Wu; Feng Wang; Chuan Wu; Ying Bai

doi:10.1016/j.jallcom.2011.10.028

Rate performance of Li ₃V ₂(PO ₄) ₃/C cathode material and its Li ⁺ ion intercalation behavior

Feng Wu, Feng 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

43 Citations (Scopus)

Abstract

Rate performance and kinetic properties of Li ₃V ₂(PO ₄) ₃/C composite electrode have been investigated in this paper. The Li ₃V ₂(PO ₄) ₃/C composite obtained via a rheological phase method displays a monoclinic structure with an average particle size of ca. 200-300 nm. Electrochemical tests show this material exhibits good reversibility and excellent rate capability up to a current density of 3373 mA g ^-1 (30 C). The composite material achieves its theoretical capacity at 1 C rate. The capacity loss is less than 4% from 1 to 10 C. Even at the highest 30 C rate, the capacity is above 100 mAh g ^-1. The kinetic properties of the composite electrode are analyzed by cyclic voltammetry (CV) and potentiostatic intermittent titration (PITT) techniques. The Li ⁺ ion diffusion coefficients calculated from PITT are in the range of 10 ^-7-10 ^-8 cm ² s ^-1.

Original language	English
Pages (from-to)	236-241
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	513
DOIs	https://doi.org/10.1016/j.jallcom.2011.10.028
Publication status	Published - 5 Feb 2012

Keywords

Cathode
Diffusion coefficient
High power
Lithium vanadium phosphate

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10.1016/j.jallcom.2011.10.028

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abstract = "Rate performance and kinetic properties of Li 3V 2(PO 4) 3/C composite electrode have been investigated in this paper. The Li 3V 2(PO 4) 3/C composite obtained via a rheological phase method displays a monoclinic structure with an average particle size of ca. 200-300 nm. Electrochemical tests show this material exhibits good reversibility and excellent rate capability up to a current density of 3373 mA g -1 (30 C). The composite material achieves its theoretical capacity at 1 C rate. The capacity loss is less than 4% from 1 to 10 C. Even at the highest 30 C rate, the capacity is above 100 mAh g -1. The kinetic properties of the composite electrode are analyzed by cyclic voltammetry (CV) and potentiostatic intermittent titration (PITT) techniques. The Li + ion diffusion coefficients calculated from PITT are in the range of 10 -7-10 -8 cm 2 s -1.",

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AU - Wang, Feng

AU - Wu, Chuan

AU - Bai, Ying

PY - 2012/2/5

Y1 - 2012/2/5

N2 - Rate performance and kinetic properties of Li 3V 2(PO 4) 3/C composite electrode have been investigated in this paper. The Li 3V 2(PO 4) 3/C composite obtained via a rheological phase method displays a monoclinic structure with an average particle size of ca. 200-300 nm. Electrochemical tests show this material exhibits good reversibility and excellent rate capability up to a current density of 3373 mA g -1 (30 C). The composite material achieves its theoretical capacity at 1 C rate. The capacity loss is less than 4% from 1 to 10 C. Even at the highest 30 C rate, the capacity is above 100 mAh g -1. The kinetic properties of the composite electrode are analyzed by cyclic voltammetry (CV) and potentiostatic intermittent titration (PITT) techniques. The Li + ion diffusion coefficients calculated from PITT are in the range of 10 -7-10 -8 cm 2 s -1.

AB - Rate performance and kinetic properties of Li 3V 2(PO 4) 3/C composite electrode have been investigated in this paper. The Li 3V 2(PO 4) 3/C composite obtained via a rheological phase method displays a monoclinic structure with an average particle size of ca. 200-300 nm. Electrochemical tests show this material exhibits good reversibility and excellent rate capability up to a current density of 3373 mA g -1 (30 C). The composite material achieves its theoretical capacity at 1 C rate. The capacity loss is less than 4% from 1 to 10 C. Even at the highest 30 C rate, the capacity is above 100 mAh g -1. The kinetic properties of the composite electrode are analyzed by cyclic voltammetry (CV) and potentiostatic intermittent titration (PITT) techniques. The Li + ion diffusion coefficients calculated from PITT are in the range of 10 -7-10 -8 cm 2 s -1.

KW - Cathode

KW - Diffusion coefficient

KW - High power

KW - Lithium vanadium phosphate

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Rate performance of Li ₃V ₂(PO ₄) ₃/C cathode material and its Li ⁺ ion intercalation behavior

Abstract

Keywords

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