物理化学学报 >> 2004, Vol. 20 >> Issue (03): 323-326.doi: 10.3866/PKU.WHXB20040322

研究简报 上一篇    下一篇

高氯酸锂-乙酰胺/乙烯脲体系的二元熔盐电解质

陈人杰;吴锋;梁宏莹;毛立彩   

  1. 北京理工大学化工与环境学院，北京　100081;国家高技术绿色材料发展中心，北京　100081
  • 收稿日期:2003-09-05 修回日期:2003-11-03 发布日期:2004-03-15
  • 通讯作者: 吴锋 E-mail:wufeng863@vip.sina.com

Binary Molten Salt Electrolytes Based on LiClO4 with Acetamide or Ethyleneurea

Chen Ren-Jie;Wu Feng;Liang Hong-Ying;Mao Li-Cai   

  1. School of Chemical Engineering and Environment Science, Beijing Institute of Technology, Beijing　100081;National Development Center of High Technology Green Materials, Beijing　100081
  • Received:2003-09-05 Revised:2003-11-03 Published:2004-03-15
  • Contact: Wu Feng E-mail:wufeng863@vip.sina.com

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摘要： 制备了高氯酸锂与乙酰胺和乙烯脲形成的二元低温熔盐电解质，采用差示扫描量热法、交流阻抗法和循环伏安法分别对其热学、电化学性质进行了研究.测试结果表明,高氯酸锂-乙酰胺体系具有较好的热稳定性和高的电导性，配比n（LiClO4）:n（Acetamide）=1.0:5.5的样品室温（25 ℃）电导率为1.25×10－3 S•cm－1，80 ℃电导率为1.15×10－2 S•cm－1;其电化学稳定电位窗近3 V左右.

关键词: 熔盐电解质, 热学性质, 离子电导率, 高氯酸锂, 乙酰胺, 乙烯脲

Abstract: Thermal and electrochemical properties of new low-temperature molten salt electrolytes based on LiClO4 with acetamide or ethyleneurea have been studied by differential scanning calorimetry, ac impedance spectroscopy and cyclic voltammertry, respectively. These electrolytes appear as liquid at room temperature through they are composed of two solids. DSC analysis shows that the LiClO4-acetamide electrolyte has the preferable thermal stability. The conductivity of LiClO4-acetamide electrolyte with a molar ratio of 1.0:5.5 is 1.25×10－3 S•cm－1 at 25 ℃ and 1.15×10－2 S•cm－1 at 80 ℃,and the electrochemical window of it is about 3 V.

Key words: Molten salt electrolytes, Thermal properties, Ionic conductivity, 　Lithium perchlorate, Acetamide, Ethyleneurea