Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (03): 323-326.doi: 10.3866/PKU.WHXB20040322

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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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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