Synthesis and Properties of Spinel Li4Ti5O12 Prepared by Solid-State Method at High Temperature

doi:10.3696/j.issn.1672-6952.2011.02.001

Journal of Liaoning Petrochemical University ›› 2011, Vol. 31 ›› Issue (2): 1-3.DOI: 10.3696/j.issn.1672-6952.2011.02.001

Synthesis and Properties of Spinel Li₄Ti₅O₁₂ Prepared by Solid-State Method at High Temperature

YANG Zhan-xu， QIAO Qing-dong

School of Petrochemical Engineering， Liaoning Shihua University， Fushun Liaoning 113001， P.R.China

Received:2011-03-14 Published:2011-06-25 Online:2017-07-05

高温固相法合成尖晶石型Li4Ti5O12及其性能研究

杨占旭,乔庆东

辽宁石油化工大学石油化工学院,辽宁抚顺113001

作者简介:杨占旭(1982-),男,辽宁铁岭县,讲师,博士。
基金资助:
辽宁省自然科学基金项目(20082187)。

Abstract

Abstract:

Li₄Ti₅O₁₂ anode material for lithium-ion batteries was synthetized from solid-state method using Li₂CO₃ and TiO₂ as the starting materials and ethanol as dispersing agent. The synthesized material was characterized by means of X-ray diffraction (XRD), scanning electron microscope (SEM) and galvanostatic charge/discharge cycling. The effects of thermal treatment and lithium content on their structure and electrochemical behavior have also been investigated. The synthesized Li₄Ti₅O₁₂ at optimum condition exhibits a good electrochemical property with initial discharge specific capacity of 167 mAh/g in the voltage range 1.0~2.2 V (versus Li/Li⁺) at a constant current density of 0.1 mA/cm², and the discharge capacity is almost no change after 30 cycles .

Key words: Lithium-ion batteries, Anode material , , Solid-state method

摘要： 以Li₂CO₃和TiO₂ 为原料,以乙醇为分散剂,采用高温固相方法合成Li₄Ti₅O₁₂锂离子电池负极材
料,利用XRD、SEM 和电化学测试等方法对合成材料的结构、形貌以及电化学性能进行了表征。系统考察了热处理
温度对Li₄Ti₅O₁₂负极材料结构及电化学性能的影响,同时也研究了锂的投料量对Li₄Ti₅O₁₂电化学性能的影响。在
1.0~2.2V(vs.Li/Li ⁺ )范围内,以0.1mA/cm² 的电流密度对最佳工艺条件下合成的Li₄Ti₅O₁₂负极材料进行了恒
电流充放电测试。其首次放电比容量为167mAh/g,经过30周充放电循环后放电比容量几乎没有衰减,表现出较
大的初始放电比容量和良好的循环性能。

关键词: 锂离子电池 , , 负极材料 , 固相方法

YANG Zhan-xu， QIAO Qing-dong. Synthesis and Properties of Spinel Li₄Ti₅O₁₂ Prepared by Solid-State Method at High Temperature[J]. Journal of Liaoning Petrochemical University, 2011, 31(2): 1-3.

杨占旭,乔庆东. 高温固相法合成尖晶石型Li4Ti5O12及其性能研究[J]. 辽宁石油化工大学学报, 2011, 31(2): 1-3.

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Synthesis and Properties of Spinel Li₄Ti₅O₁₂ Prepared by Solid-State Method at High Temperature

高温固相法合成尖晶石型Li4Ti5O12及其性能研究

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