Mg-substituted olivine LiFePO4 for secondary lithium ion batteries

Ying Bai; Chuan Wu; Feng Wu; Yuan Yuan Wei; Jun Wei

doi:10.1109/ICEICE.2011.5777093

Mg-substituted olivine LiFePO₄ for secondary lithium ion batteries

Ying Bai^*, Chuan Wu, Feng Wu, Yuan Yuan Wei, Jun Wei

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Mg-substituted olivine LiFePO₄ samples with various substituted contents were prepared via a two-step method. The crystal structures of the as-prepared LiFe_1xMg_xPO₄ (x=0, 0.02, 0.1, 0.2) were detected by X-ray diffraction, and no impurities found. The electrochemical performances of the LiFe_1xMg_xPO₄ cathodes were evaluated by charge/discharge test, cyclic voltammetry, and electrochemical impedance spectroscopy. Compared with the blank sample LiFePO4, the Mg-substituted LiFe_1xMg_xPO₄ shows improved discharge capacities as well as better cycle life, among which LiFe _0.9Mg_0.1PO₄ has the lowest charge transfer resistance, which results in the best electrochemical performances, namely, an initial discharge capacity of 123mAh/g, and a capacity retention more than 92%.

Original language	English
Title of host publication	2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings
Pages	4272-4275
Number of pages	4
DOIs	https://doi.org/10.1109/ICEICE.2011.5777093
Publication status	Published - 2011
Event	2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Wuhan, China Duration: 15 Apr 2011 → 17 Apr 2011

Publication series

Name	2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings

Conference

Conference	2011 International Conference on Electric Information and Control Engineering, ICEICE 2011
Country/Territory	China
City	Wuhan
Period	15/04/11 → 17/04/11

Keywords

LiFePO
cathode
cyclic voltammetry
electrochemical impedency spectroscopy
lithium ion battery

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/ICEICE.2011.5777093

Cite this

Bai, Y., Wu, C., Wu, F., Wei, Y. Y., & Wei, J. (2011). Mg-substituted olivine LiFePO₄ for secondary lithium ion batteries. In 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings (pp. 4272-4275). Article 5777093 (2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings). https://doi.org/10.1109/ICEICE.2011.5777093

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title = "Mg-substituted olivine LiFePO4 for secondary lithium ion batteries",

abstract = "Mg-substituted olivine LiFePO4 samples with various substituted contents were prepared via a two-step method. The crystal structures of the as-prepared LiFe1xMgxPO4 (x=0, 0.02, 0.1, 0.2) were detected by X-ray diffraction, and no impurities found. The electrochemical performances of the LiFe1xMgxPO4 cathodes were evaluated by charge/discharge test, cyclic voltammetry, and electrochemical impedance spectroscopy. Compared with the blank sample LiFePO4, the Mg-substituted LiFe1xMgxPO4 shows improved discharge capacities as well as better cycle life, among which LiFe 0.9Mg0.1PO4 has the lowest charge transfer resistance, which results in the best electrochemical performances, namely, an initial discharge capacity of 123mAh/g, and a capacity retention more than 92%.",

keywords = "LiFePO, cathode, cyclic voltammetry, electrochemical impedency spectroscopy, lithium ion battery",

author = "Ying Bai and Chuan Wu and Feng Wu and Wei, {Yuan Yuan} and Jun Wei",

year = "2011",

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language = "English",

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note = "2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 ; Conference date: 15-04-2011 Through 17-04-2011",

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Bai, Y , Wu, C, Wu, F, Wei, YY & Wei, J 2011, Mg-substituted olivine LiFePO₄ for secondary lithium ion batteries. in 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings., 5777093, 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings, pp. 4272-4275, 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, Wuhan, China, 15/04/11. https://doi.org/10.1109/ICEICE.2011.5777093

Mg-substituted olivine LiFePO₄ for secondary lithium ion batteries. / Bai, Ying ; Wu, Chuan; Wu, Feng et al.
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings. 2011. p. 4272-4275 5777093 (2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Mg-substituted olivine LiFePO4 for secondary lithium ion batteries

AU - Bai, Ying

AU - Wu, Chuan

AU - Wu, Feng

AU - Wei, Yuan Yuan

AU - Wei, Jun

PY - 2011

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N2 - Mg-substituted olivine LiFePO4 samples with various substituted contents were prepared via a two-step method. The crystal structures of the as-prepared LiFe1xMgxPO4 (x=0, 0.02, 0.1, 0.2) were detected by X-ray diffraction, and no impurities found. The electrochemical performances of the LiFe1xMgxPO4 cathodes were evaluated by charge/discharge test, cyclic voltammetry, and electrochemical impedance spectroscopy. Compared with the blank sample LiFePO4, the Mg-substituted LiFe1xMgxPO4 shows improved discharge capacities as well as better cycle life, among which LiFe 0.9Mg0.1PO4 has the lowest charge transfer resistance, which results in the best electrochemical performances, namely, an initial discharge capacity of 123mAh/g, and a capacity retention more than 92%.

AB - Mg-substituted olivine LiFePO4 samples with various substituted contents were prepared via a two-step method. The crystal structures of the as-prepared LiFe1xMgxPO4 (x=0, 0.02, 0.1, 0.2) were detected by X-ray diffraction, and no impurities found. The electrochemical performances of the LiFe1xMgxPO4 cathodes were evaluated by charge/discharge test, cyclic voltammetry, and electrochemical impedance spectroscopy. Compared with the blank sample LiFePO4, the Mg-substituted LiFe1xMgxPO4 shows improved discharge capacities as well as better cycle life, among which LiFe 0.9Mg0.1PO4 has the lowest charge transfer resistance, which results in the best electrochemical performances, namely, an initial discharge capacity of 123mAh/g, and a capacity retention more than 92%.

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KW - cyclic voltammetry

KW - electrochemical impedency spectroscopy

KW - lithium ion battery

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Bai Y , Wu C, Wu F, Wei YY, Wei J. Mg-substituted olivine LiFePO₄ for secondary lithium ion batteries. In 2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings. 2011. p. 4272-4275. 5777093. (2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings). doi: 10.1109/ICEICE.2011.5777093