Preparation of LiFePO<sub>4</sub>/C plate cathode materials and their electrochemical properties

GAO Qiang; LYU Hong; XIONG Fan; CHEN Fei; YANG Zeheng; ZHANG Weixin

doi:10.11949/j.issn.0438-1157.20181395

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Preparation of LiFePO₄/C plate cathode materials and their electrochemical properties

Material science and engineering\, nanotechnology | 更新时间：2026-07-24

- Preparation of LiFePO₄/C plate cathode materials and their electrochemical properties
- CIESC Journal Vol. 70, Issue 4, Pages: 1628-1634(2019)
- 作者机构：
  
  合肥工业大学化学与化工学院，安徽合肥 230009
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20181395
  CLC： TQ 150
- Received：22 November 2018，
  
  Revised：2019-01-07，
  
  Online First：15 June 2020，
  
  Published：12 April 2019
- 稿件说明：
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高强, 吕洪, 熊凡, 陈飞, 杨则恒, 张卫新. 片状LiFePO₄/C正极材料制备及其电化学性能研究[J]. 化工学报, 2019, 70(4): 1628-1634 DOI: 10.11949/j.issn.0438-1157.20181395.

GAO Qiang, LYU Hong, XIONG Fan, CHEN Fei, YANG Zeheng, ZHANG Weixin. Preparation of LiFePO₄/C plate cathode materials and their electrochemical properties[J]. CIESC Journal, 2019, 70(4): 1628-1634 DOI: 10.11949/j.issn.0438-1157.20181395.
高强, 吕洪, 熊凡, 陈飞, 杨则恒, 张卫新. 片状LiFePO₄/C正极材料制备及其电化学性能研究[J]. 化工学报, 2019, 70(4): 1628-1634 DOI: 10.11949/j.issn.0438-1157.20181395. DOI：

GAO Qiang, LYU Hong, XIONG Fan, CHEN Fei, YANG Zeheng, ZHANG Weixin. Preparation of LiFePO₄/C plate cathode materials and their electrochemical properties[J]. CIESC Journal, 2019, 70(4): 1628-1634 DOI: 10.11949/j.issn.0438-1157.20181395. DOI：

摘要

在温和的反应条件下，使用十二烷基苯磺酸钠(SDBS)成功合成了片状二水磷酸铁，并将其与氢氧化锂、柠檬酸球磨混合，采用碳热还原法制备了具有纳米厚度的片状LiFePO

/C电极材料。研究了SDBS对磷酸铁形貌以及LiFePO

/C电极材料电化学性能的影响。利用X-射线衍射、扫描电子显微镜和充放电测试等技术手段，对合成样品的物相、形貌和电化学性能进行了分析测试。电化学测试表明，在25℃，2.0～4.2 V电压范围条件下，使用片状二水磷酸铁为前驱体制备的LiFePO

/C样品，在0.1 C下放电比容量高达166.4 mA·h·g

-1

，且首次库仑效率达到99.6%，在1 C下循环500次容量保持率为99%，表现出了优异的电化学性能。

Abstract

Under mild reaction conditions

flaky iron phosphate dihydrate was successfully synthesized using sodium dodecyl benzene sulfonate (SDBS)

and mixed with lithium hydroxide and citric acid by ball milling

and prepared by carbothermal reduction method. The effects of SDBS on FePO

·2H

O morphology and the electrochemical properties of LiFePO

/C were studied. The phase

morphology and electrochemical properties of the synthesized samples were characterized by X-ray diffraction (XRD)

field emission scanning electron microscopy (FESEM) and charge-discharge test. The LiFePO

/C plate-like electrode material achieves excellent electrochemical performance under 2.0—4.2 V at 25℃. It delivers a specific discharge capacity of 166.4 mA·h·g

–1

at 0.1 C with initial Coulombic efficiency up to 99.6% and exhibits a capacity retention of 99% after 500 cycles at 1 C.

关键词

Keywords

references

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⁰

Preparation of LiFePO4/C plate cathode materials and their electrochemical properties

DOI：10.11949/j.issn.0438-1157.20181395

摘要

Abstract

关键词

Keywords

references

Preparation of LiFePO₄/C plate cathode materials and their electrochemical properties