Preparation and characterization of Li4Ti5O12/C anode material for lithium ion batteries

ZHAO Xi; TIAN Yanhong; ZHANG Xuejun; CHEN Yong

doi:10.11949/j.issn.0438-1157.20141179

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Preparation and characterization of Li₄Ti₅O₁₂/C anode material for lithium ion batteries

更新时间：2025-12-10

- Preparation and characterization of Li₄Ti₅O₁₂/C anode material for lithium ion batteries
- CIESC Journal Issue 5, Pages: 1989-1995(2015)
- 作者机构：
  
  北京化工大学材料科学与工程学院,北京,100029
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141179
  CLC： 646
- Online First：05 May 2015，
  
  Published：05 May 2015
- 稿件说明：
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ZHAO Xi, TIAN Yanhong, ZHANG Xuejun, et al. Preparation and characterization of Li₄Ti₅O₁₂/C anode material for lithium ion batteries[J]. CIESC Journal, 2015, (5): 1989-1995. DOI: 10.11949/j.issn.0438-1157.20141179.
DOI：

ZHAO Xi, TIAN Yanhong, ZHANG Xuejun, et al. Preparation and characterization of Li₄Ti₅O₁₂/C anode material for lithium ion batteries[J]. CIESC Journal, 2015, (5): 1989-1995. DOI: 10.11949/j.issn.0438-1157.20141179. DOI：

摘要

针对Li4Ti5O12导电性和倍率性能差的缺陷

以PEG为碳源采用溶胶-凝胶法制备出电池负极材料Li4Ti5O12/C

考察不同分子量聚乙二醇PEG(400、600、1000)做碳源制备的Li4Ti5O12/C复合材料电化学性能的优劣

采用热重分析仪(TG)、X射线衍射仪(XRD)、扫描电镜(SEM)、透射电镜(TEM)、恒流充放电、倍率放电、交流阻抗(EIS)等方法对材料进行了结构表征和电化学性能测试。结果表明:以PEG1000为碳源时得到的Li4Ti5O12/C

0.1C下首次放电比容量为143.5 mA·h·g-1

2C的倍率下仍然保持了105 mA·h·g-1的比容量

容量保持率达到73.17%

并且此材料有最小的电阻

在大电流条件下有良好的电化学性能。

Abstract

In order to enhance electrical conductivity and rate capability of Li4Ti5O12

the Li4Ti5O12/C powder was prepared by the sol-gel method

using PEG as carbon source. The performance of Li4Ti5O12/C coated by three different molecular weight carbon sources: PEG (400

600

and 1000)

was investigated with TG

XRD

SEM

TEM

constant current charge-discharge

rate discharge and EIS. The material obtained by using PEG1000 as carbon source had the best electrochemical performance. Initial discharge capacity was 143.5 mA·h·g-1 at 0.1C rate

and discharge capacity remained 105 mA·h·g-1 at 2C rate

capacity retention ratio was 73.17%

in addition

it had the smallest resistance.

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