东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2005, Vol. 26 ›› Issue (6): 570-573.DOI: -

• 论著 • 上一篇    下一篇

Li_2CO_3在KCl-LiCl熔体中的电化学行为

张明杰;李继东;王耀武   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2005-06-15 发布日期:2013-06-24
  • 通讯作者: Zhang, M.-J.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2001AA335010)

Electrochemical behavior of lithium carbonate in KCl-LiCl melt

Zhang, Ming-Jie (1); Li, Ji-Dong (1); Wang, Yao-Wu (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2005-06-15 Published:2013-06-24
  • Contact: Zhang, M.-J.
  • About author:-
  • Supported by:
    -

RichHTML

1

PDF (PC)

819

摘要： 采用连续脉冲-示波器法和电位扫描法研究了Li2CO3在KCl LiCl熔体中的电化学行为·发现在负于氯离子析出电位前有一氧化电流峰,这一结果被连续脉冲-示波器法所证实,是添加Li2CO3引起的O2-离子放电生成CO2的电流峰·在KCl LiCl体系中,反电动势随着电流密度的增加而增加,但添加Li2CO3后,在同样的电流密度下反电动势则明显降低·以Li2CO3代替LiCl作为电解生产金属锂的原料,不但减少了环境污染,而且降低了锂的生产成本,是电解锂的发展方向·

关键词: 锂, 熔盐电解, 氯化锂, 碳酸锂, 熔盐电化学

Abstract: The electrochemical behavior of Li2CO3 in KCl-LiCl melt was investigated by continuous pulse-oscillograph and potential sweep. It was found that there is a peak of oxidation current ahead of the potential at which the negative chlorine ions precipitate and the current peak is caused by the CO2 which is produced by the O2- ionic discharge due to Li2CO3 addition. In the KCl-LiCl system the back EMF increases with increasing current density, but the back EMF will decrease greatly at the same current density if adding Li2CO3. Using Li2CO3 instead of LiCl as the raws material in metallic lithium production by galvanolysis is regarded as the new trend of lithium galvanolysis because Li2CO3 will not only minimize the environmental pollution but also reduce the cost.

中图分类号: