Synthesis of LiFePO4/C using ionic liquid as carbon source for lithium ion batteries

Jun Xia; Fuliang Zhu; Gongrui Wang; Lei Wang; Yanshuang Meng; Yue Zhang

doi:10.1016/j.ssi.2017.06.007

Synthesis of LiFePO₄/C using ionic liquid as carbon source for lithium ion batteries

Jun Xia, Fuliang Zhu, Gongrui Wang, Lei Wang, Yanshuang Meng, Yue Zhang

Manufacturing Engineering

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

27 Scopus citations

Abstract

LiFePO₄/C (LFP/C) materials are synthesized by a hydrothermal method with ionic liquid 1-vinyl-3-ethylimidazolium bis(trifluoromethylsulfony)imide ([VEIm]NTf₂) as carbon source. Carbon films of 5–10 nm are successfully coated on the surface of LiFePO₄ (LFP) particles and serve as the protective layers of LFP particles during cycling. The carbon materials also fill the gap between LFP particles, which creates electron transfer paths. Due to the integrated carbon materials, the LFP/C exhibits significantly improved reversibility, cycle stability, rate performance, and charge and discharge capacity. These results demonstrate a simple and scalable application of ionic liquid [VEIm]NTf₂ as carbon source toward electrochemical energy storage.

Original language	English
Pages (from-to)	133-138
Number of pages	6
Journal	Solid State Ionics
Volume	308
DOIs	https://doi.org/10.1016/j.ssi.2017.06.007
State	Published - Oct 1 2017

Keywords

Ionic liquid
LiFePO/C
Lithium ion batteries

UN SDGs

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

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10.1016/j.ssi.2017.06.007License: Unspecified

Cite this

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title = "Synthesis of LiFePO4/C using ionic liquid as carbon source for lithium ion batteries",

abstract = "LiFePO4/C (LFP/C) materials are synthesized by a hydrothermal method with ionic liquid 1-vinyl-3-ethylimidazolium bis(trifluoromethylsulfony)imide ([VEIm]NTf2) as carbon source. Carbon films of 5–10 nm are successfully coated on the surface of LiFePO4 (LFP) particles and serve as the protective layers of LFP particles during cycling. The carbon materials also fill the gap between LFP particles, which creates electron transfer paths. Due to the integrated carbon materials, the LFP/C exhibits significantly improved reversibility, cycle stability, rate performance, and charge and discharge capacity. These results demonstrate a simple and scalable application of ionic liquid [VEIm]NTf2 as carbon source toward electrochemical energy storage.",

keywords = "Ionic liquid, LiFePO/C, Lithium ion batteries",

author = "Jun Xia and Fuliang Zhu and Gongrui Wang and Lei Wang and Yanshuang Meng and Yue Zhang",

note = "Publisher Copyright: {\textcopyright} 2017",

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doi = "10.1016/j.ssi.2017.06.007",

language = "English",

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T1 - Synthesis of LiFePO4/C using ionic liquid as carbon source for lithium ion batteries

AU - Xia, Jun

AU - Zhu, Fuliang

AU - Wang, Gongrui

AU - Wang, Lei

AU - Meng, Yanshuang

AU - Zhang, Yue

PY - 2017/10/1

Y1 - 2017/10/1

N2 - LiFePO4/C (LFP/C) materials are synthesized by a hydrothermal method with ionic liquid 1-vinyl-3-ethylimidazolium bis(trifluoromethylsulfony)imide ([VEIm]NTf2) as carbon source. Carbon films of 5–10 nm are successfully coated on the surface of LiFePO4 (LFP) particles and serve as the protective layers of LFP particles during cycling. The carbon materials also fill the gap between LFP particles, which creates electron transfer paths. Due to the integrated carbon materials, the LFP/C exhibits significantly improved reversibility, cycle stability, rate performance, and charge and discharge capacity. These results demonstrate a simple and scalable application of ionic liquid [VEIm]NTf2 as carbon source toward electrochemical energy storage.

AB - LiFePO4/C (LFP/C) materials are synthesized by a hydrothermal method with ionic liquid 1-vinyl-3-ethylimidazolium bis(trifluoromethylsulfony)imide ([VEIm]NTf2) as carbon source. Carbon films of 5–10 nm are successfully coated on the surface of LiFePO4 (LFP) particles and serve as the protective layers of LFP particles during cycling. The carbon materials also fill the gap between LFP particles, which creates electron transfer paths. Due to the integrated carbon materials, the LFP/C exhibits significantly improved reversibility, cycle stability, rate performance, and charge and discharge capacity. These results demonstrate a simple and scalable application of ionic liquid [VEIm]NTf2 as carbon source toward electrochemical energy storage.

KW - Ionic liquid

KW - LiFePO/C

KW - Lithium ion batteries

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