锂离子电池负极材料Li4Ti5O12的固相法制备及性能研究

吕文俊1, 张海朗1*, 李道荣2,3, 李倩倩3

化工新型材料 ›› 2018, Vol. 46 ›› Issue (8) : 146 -148.

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化工新型材料 ›› 2018, Vol. 46 ›› Issue (8) : 146-148.
科学研究

锂离子电池负极材料Li4Ti5O12的固相法制备及性能研究

    吕文俊1, 张海朗1*, 李道荣2,3, 李倩倩3
作者信息 +

Synthesis and property research of Li4Ti5O12 as cathode material for lithium ionic battery

  • Lv Wenjun1, Zhang Hailang1, Li Daorong2,3, Li Qianqian3
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摘要

采用高温固相法,以二氧化钛(TiO2)和碳酸锂(Li2CO3)为原料,在空气气氛中800℃经一步高温煅烧条件下,制得尖晶石型钛酸锂(Li4Ti5O12)负极材料。通过测试结果确定最佳合成工艺条件为:原料中锂元素含量过量5%(wt,质量分数),经800℃煅烧10h制得的Li4Ti5O12材料的电化学性能最佳,在0.1C电流密度下,首次放电比容量达到167.6mAh/g,经50次循环后容量保持率达到99.1%,电化学性能明显高于优化之前。

Abstract

Spinel Li4Ti5O12 cathode materials were prepared by solid-state reaction using TiO2 and Li2CO3 as the reactants and calcined at 800℃ in atmosphere.The electrochemical test results showed that the most appropriate excessive amount of Li2CO3 was 5wt% and the optimal holding time was 10h.Under the optimal conditions,the initial discharge specific capacity of sample was as high as 167.6mAh/g at the current density of 0.1C,and the capacity retention was 99.1% after 50 cycles,which was sharply higher than the previous method.

关键词

锂离子电池 / 负极材料 / Li4Ti5O12 / 固相法

Key words

Li ionic battery / cathode material / Li4Ti5O12 / solid state method

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锂离子电池负极材料Li4Ti5O12的固相法制备及性能研究[J]. 化工新型材料, 2018, 46(8): 146-148 DOI:

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