Synthesis and electrochemical properties of Li3V 2(PO4)3-LiMnPO4 composite cathode material for lithium-ion batteries

Jin Shik Yun; Soo Kim; Byung Won Cho; Kwan Young Lee; Kyung Yoon Chung; Wonyoung Chang

doi:10.5012/bkcs.2013.34.2.433

Synthesis and electrochemical properties of Li₃V ₂(PO₄)₃-LiMnPO₄ composite cathode material for lithium-ion batteries

Jin Shik Yun, Soo Kim, Byung Won Cho, Kwan Young Lee, Kyung Yoon Chung, Wonyoung Chang

Department of Chemical and Biological Engineering

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

8 Citations (Scopus)

Abstract

Carbon-coated Li₃V₂(PO₄) ₃-LiMnPO₄ composite cathode materials are first reported in this work, prepared by the mechanochemical process with a complex metal oxide as the precursor and sucrose as the carbon source. X-ray diffraction pattern of the composite material indicates that both olivine LiMnPO₄ and monoclinic Li₃V₂(PO₄)₃ co-exist. We further investigated the electrochemical properties of our Li₃V ₂(PO₄)₃-LiMnPO₄ composite cathode materials using galvanostatic charging/discharging tests, where our Li ₃V₂(PO₄)₃-LiMnPO₄ composite electrode materials exhibit the charge/discharge efficiency of 91.9%, while Li₃V₂(PO₄)₃ and LiMnPO ₄ exhibit the efficiency of 87.7 and 86.7% in the first cycle. The composites display unique electrochemical performances in terms of overvoltage and cycle stability, displaying a reduced gap of 141.6 mV between charge and discharge voltage and 95.0% capacity efficiency after 15th cycles.

Original language	English
Pages (from-to)	433-436
Number of pages	4
Journal	Bulletin of the Korean Chemical Society
Volume	34
Issue number	2
DOIs	https://doi.org/10.5012/bkcs.2013.34.2.433
Publication status	Published - 2013 Feb 20

Keywords

Composite
Li-ion batteries
LiMnPO
LiV (PO)
Mechanochemical process

ASJC Scopus subject areas

Chemistry(all)

UN SDGs

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

Access to Document

10.5012/bkcs.2013.34.2.433

Cite this

@article{426ee3c695b14ceeb4ffaea62b7537f0,

title = "Synthesis and electrochemical properties of Li3V 2(PO4)3-LiMnPO4 composite cathode material for lithium-ion batteries",

abstract = "Carbon-coated Li3V2(PO4) 3-LiMnPO4 composite cathode materials are first reported in this work, prepared by the mechanochemical process with a complex metal oxide as the precursor and sucrose as the carbon source. X-ray diffraction pattern of the composite material indicates that both olivine LiMnPO4 and monoclinic Li3V2(PO4)3 co-exist. We further investigated the electrochemical properties of our Li3V 2(PO4)3-LiMnPO4 composite cathode materials using galvanostatic charging/discharging tests, where our Li 3V2(PO4)3-LiMnPO4 composite electrode materials exhibit the charge/discharge efficiency of 91.9%, while Li3V2(PO4)3 and LiMnPO 4 exhibit the efficiency of 87.7 and 86.7% in the first cycle. The composites display unique electrochemical performances in terms of overvoltage and cycle stability, displaying a reduced gap of 141.6 mV between charge and discharge voltage and 95.0% capacity efficiency after 15th cycles.",

keywords = "Composite, Li-ion batteries, LiMnPO, LiV (PO), Mechanochemical process",

author = "Yun, {Jin Shik} and Soo Kim and Cho, {Byung Won} and Lee, {Kwan Young} and Chung, {Kyung Yoon} and Wonyoung Chang",

year = "2013",

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doi = "10.5012/bkcs.2013.34.2.433",

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T1 - Synthesis and electrochemical properties of Li3V 2(PO4)3-LiMnPO4 composite cathode material for lithium-ion batteries

AU - Yun, Jin Shik

AU - Kim, Soo

AU - Cho, Byung Won

AU - Lee, Kwan Young

AU - Chung, Kyung Yoon

AU - Chang, Wonyoung

PY - 2013/2/20

Y1 - 2013/2/20

N2 - Carbon-coated Li3V2(PO4) 3-LiMnPO4 composite cathode materials are first reported in this work, prepared by the mechanochemical process with a complex metal oxide as the precursor and sucrose as the carbon source. X-ray diffraction pattern of the composite material indicates that both olivine LiMnPO4 and monoclinic Li3V2(PO4)3 co-exist. We further investigated the electrochemical properties of our Li3V 2(PO4)3-LiMnPO4 composite cathode materials using galvanostatic charging/discharging tests, where our Li 3V2(PO4)3-LiMnPO4 composite electrode materials exhibit the charge/discharge efficiency of 91.9%, while Li3V2(PO4)3 and LiMnPO 4 exhibit the efficiency of 87.7 and 86.7% in the first cycle. The composites display unique electrochemical performances in terms of overvoltage and cycle stability, displaying a reduced gap of 141.6 mV between charge and discharge voltage and 95.0% capacity efficiency after 15th cycles.

AB - Carbon-coated Li3V2(PO4) 3-LiMnPO4 composite cathode materials are first reported in this work, prepared by the mechanochemical process with a complex metal oxide as the precursor and sucrose as the carbon source. X-ray diffraction pattern of the composite material indicates that both olivine LiMnPO4 and monoclinic Li3V2(PO4)3 co-exist. We further investigated the electrochemical properties of our Li3V 2(PO4)3-LiMnPO4 composite cathode materials using galvanostatic charging/discharging tests, where our Li 3V2(PO4)3-LiMnPO4 composite electrode materials exhibit the charge/discharge efficiency of 91.9%, while Li3V2(PO4)3 and LiMnPO 4 exhibit the efficiency of 87.7 and 86.7% in the first cycle. The composites display unique electrochemical performances in terms of overvoltage and cycle stability, displaying a reduced gap of 141.6 mV between charge and discharge voltage and 95.0% capacity efficiency after 15th cycles.

KW - Composite

KW - Li-ion batteries

KW - LiMnPO

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KW - Mechanochemical process

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