A comparative study on LiFePO4/C by in-situ coating with different carbon sources for high-performance lithium batteries

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

doi:10.1016/j.electacta.2017.12.127

A comparative study on LiFePO₄/C by in-situ coating with different carbon sources for high-performance lithium batteries

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

Manufacturing Engineering

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

33 Scopus citations

Abstract

LiFePO₄/C materials are synthesized via in-situ coating of LiFePO₄ by using 1-butyl-3-methylimidazolium dicyanamide ([BMIm][N(CN)₂]) and glucose as carbon sources, respectively. The structure characterization results indicate that the carbon sources have no effect on the LiFePO₄ particles, but have remarkable influence on the coated carbon films. It is found that the [BMIm][N(CN)₂] carbon source leads to ultrathin (1–2 nm), uniform and highly graphitized carbon films. Due to this unique structure, the electrode materials fabricated by using [BMIm][N(CN)₂] exhibit a superior electrode reaction reversibility, a capacity retention of 160.6 mAhg⁻¹ (1.47% decay rate) after 50 cycles and a specific discharge capacity of 143.6 mAhg⁻¹ at 1C, which is much better than the performance of the electrode materials synthesized with glucose.

Original language	English
Pages (from-to)	96-103
Number of pages	8
Journal	Electrochimica Acta
Volume	261
DOIs	https://doi.org/10.1016/j.electacta.2017.12.127
State	Published - Jan 20 2018

UN SDGs

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

SDG 7 Affordable and Clean Energy

Scopus Subject Areas

General Chemical Engineering
Electrochemistry

Keywords

Graphitized carbon films
In-situ coating
Ionic liquid
Lithium iron phosphate
Lithium-ion batteries

Access to Document

10.1016/j.electacta.2017.12.127

Cite this

@article{ebdaf0c85c2a45709adbbd3a84523d6b,

title = "A comparative study on LiFePO4/C by in-situ coating with different carbon sources for high-performance lithium batteries",

abstract = "LiFePO4/C materials are synthesized via in-situ coating of LiFePO4 by using 1-butyl-3-methylimidazolium dicyanamide ([BMIm][N(CN)2]) and glucose as carbon sources, respectively. The structure characterization results indicate that the carbon sources have no effect on the LiFePO4 particles, but have remarkable influence on the coated carbon films. It is found that the [BMIm][N(CN)2] carbon source leads to ultrathin (1–2 nm), uniform and highly graphitized carbon films. Due to this unique structure, the electrode materials fabricated by using [BMIm][N(CN)2] exhibit a superior electrode reaction reversibility, a capacity retention of 160.6 mAhg−1 (1.47\% decay rate) after 50 cycles and a specific discharge capacity of 143.6 mAhg−1 at 1C, which is much better than the performance of the electrode materials synthesized with glucose.",

keywords = "Graphitized carbon films, In-situ coating, Ionic liquid, Lithium iron phosphate, Lithium-ion batteries",

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

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

year = "2018",

month = jan,

day = "20",

doi = "10.1016/j.electacta.2017.12.127",

language = "English",

volume = "261",

pages = "96--103",

journal = "Electrochimica Acta",

issn = "0013-4686",

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TY - JOUR

T1 - A comparative study on LiFePO4/C by in-situ coating with different carbon sources for high-performance lithium batteries

AU - Meng, Yanshuang

AU - Xia, Jun

AU - Wang, Lei

AU - Wang, Gongrui

AU - Zhu, Fuliang

AU - Zhang, Yue

PY - 2018/1/20

Y1 - 2018/1/20

N2 - LiFePO4/C materials are synthesized via in-situ coating of LiFePO4 by using 1-butyl-3-methylimidazolium dicyanamide ([BMIm][N(CN)2]) and glucose as carbon sources, respectively. The structure characterization results indicate that the carbon sources have no effect on the LiFePO4 particles, but have remarkable influence on the coated carbon films. It is found that the [BMIm][N(CN)2] carbon source leads to ultrathin (1–2 nm), uniform and highly graphitized carbon films. Due to this unique structure, the electrode materials fabricated by using [BMIm][N(CN)2] exhibit a superior electrode reaction reversibility, a capacity retention of 160.6 mAhg−1 (1.47% decay rate) after 50 cycles and a specific discharge capacity of 143.6 mAhg−1 at 1C, which is much better than the performance of the electrode materials synthesized with glucose.

AB - LiFePO4/C materials are synthesized via in-situ coating of LiFePO4 by using 1-butyl-3-methylimidazolium dicyanamide ([BMIm][N(CN)2]) and glucose as carbon sources, respectively. The structure characterization results indicate that the carbon sources have no effect on the LiFePO4 particles, but have remarkable influence on the coated carbon films. It is found that the [BMIm][N(CN)2] carbon source leads to ultrathin (1–2 nm), uniform and highly graphitized carbon films. Due to this unique structure, the electrode materials fabricated by using [BMIm][N(CN)2] exhibit a superior electrode reaction reversibility, a capacity retention of 160.6 mAhg−1 (1.47% decay rate) after 50 cycles and a specific discharge capacity of 143.6 mAhg−1 at 1C, which is much better than the performance of the electrode materials synthesized with glucose.

KW - Graphitized carbon films

KW - In-situ coating

KW - Ionic liquid

KW - Lithium iron phosphate

KW - Lithium-ion batteries

UR - https://www.scopus.com/pages/publications/85038942913

U2 - 10.1016/j.electacta.2017.12.127

DO - 10.1016/j.electacta.2017.12.127

M3 - Article

SN - 0013-4686

VL - 261

SP - 96

EP - 103

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -