中华医学超声杂志

应用化学 ›› 1988, Vol. 0 ›› Issue (3): 15-18.

• 研究论文 • 上一篇    下一篇

Liy(PC)yTiS2夹层化合物的形成及其对Li/TiS2蓄电池利用率的影响

张立新1, 叶复汉2, 乔桂文2, 李黎光2   

  1. 1. 中国科学院金属腐蚀与防护研究所, 沈阳;
    2. 中国科学院金属研究所, 沈阳
  • 收稿日期:1987-03-23 修回日期:1987-06-19 出版日期:1988-06-10 发布日期:1988-06-10

FORMATION OF Liy (PC)y TiS2 INTERCALATION COMPOUND AND ITS EFFECT ON UTILIZATION OF Li/TiS2 SECONDARY CELL

Zhang Lixin1, Ye Fuhan2, Qiao Guiwen2, Li Liguang2   

  1. 1. Institute of Corrosion and Protection of Metals, Academia Stntca, Shenyang;
    2. Institute of Metals Research, Academia Sinica, Shenyang
  • Received:1987-03-23 Revised:1987-06-19 Published:1988-06-10 Online:1988-06-10

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摘要： 本文应用X射线衍射仪,高分辨电镜,热分析和质谱仪等方法研究了以LiClo4+碳酸丙烯酯(PC)为电解质的Li/TiS2电池在充放电过程中TiS2的结构变化.发现了两个嵌入过程:一个是Li+离子嵌入和脱层的可逆通程;一个是Li+离子和PC分子共嵌入的电化学不可逆过程,生成了Liy(PC)yTiS2夹层化合物.这类夹层化合物是电池循环使用时利用率下降的主要原因.

关键词: 锂/二硫化钛二次电池夹层化合物, 碳酸丙烯酯

Abstract: The structure change of TiS2 during charge-discharge in Li/TiS2 secondary cell in 1 M LiClO4-PC (propylenc carbonate)electrolyte was investegated by X-ray diffraction, high resolution electronmicroscopy, thermogravimetry and mass spectroscopy. Two intercalation processes were found: the one is reversible to Li, forming a compound of Lix TiS2, the other is irreversible to both Li and PC, forming compounds of Liy (PC)y TiS2, which are the main cause leading to the decrease of the efficiencY of Li/TiS2 cell after chargedischarge cycles.

Key words: Lithium/Titanium sulfide secondary cell, Intercalation compound, Propylene carbonate

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