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Citation: CHEN Ren-Jie, WU Feng. Spectroscopic Investigation of New Binary Molten Salt Electrolytes Based on LiClO₄ with Acetamide[J]. Acta Physico-Chimica Sinica, ;2005, 21(02): 177-181. doi: 10.3866/PKU.WHXB20050213 shu

Spectroscopic Investigation of New Binary Molten Salt Electrolytes Based on LiClO₄ with Acetamide

CHEN Ren-Jie ,
WU Feng

1.
School of Chemical Engineering ＆ the Environment, Beijing Institute of Technology, National Development Center of High Technology Green Materials, Beijing　100081

Received Date: 19 July 2004
Available Online: 15 February 2005

New low-temperature molten salt electrolytes based on LiClO4 and acetamide with proper molar ratio appear as liquid at room temperature through they are composed of two solids and have excellent thermal stability and electrochemical properties. The mechanism of action has been studied by FT-IR spectroscopy, FT-Raman spectroscopy and quantum chemistry calculation with nonlocal DFT. The results indicated that acetamide can coordinate with Li＋ cation in the LiClO4-acetamide system through Li－O bonding. A big coordinate cation was formed and the coulombic force was weakened. Meanwhile, Li－O can also lead to the breakage of hydrogen bonding between acetamide molecules, resulting in the decrease of the co-molten temperature of the system compared with that of pure salt. A part of samples of this molten salt could exist stably in liquid state at room temperature.
- Molten salt electrolytes;Lithium perchlorate;Acetamide;Nonlocal DFT;FT-IR spectroscopy;FT-Raman spectroscopy
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Spectroscopic Investigation of New Binary Molten Salt Electrolytes Based on LiClO4 with Acetamide

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通讯作者: 陈斌, bchen63@163.com

Spectroscopic Investigation of New Binary Molten Salt Electrolytes Based on LiClO₄ with Acetamide