期刊刊名：科技學刊－科技類 　 卷期：18卷1期

篇名出版日期：2009年10月1日

作者：Chao-Chen Yang, Hsin-YI Hsu, Jin-Jia Deng,楊肇政,許信儀,鄧晉嘉

語言：English

關鍵字：room temperature molten salt (RTMS), phase diagram, density, activation energy, equivalent conductivity,室溫型熔融鹽,相圖,密度,活化能,當量電導度

被點閱次數：4次

閱讀時間：16sec

摘要：
This study investigates the transport characteristics of binary lithium bis (trifluoro-methane sulfone) imide (LiN(SO₂CF₃)₂, LiTFSI)-urea room temperature molten salt which is consider to used as the electrolyte for Li ion secondary battery. The differ-ential scanning calorimetry (DSC) was used for obtaining the phase diagram of LiTFSI-urea system. It was observed that when the molar ratio of LiTFSI and urea was 20:80, this system had the lowest eutectic point of 230.19 K. The conductivity of the binary molten salt increased with increasing temperature and urea content, whereas the density decreased with increasing temperature and urea content. The ac-tivation energies of equivalent conductivity of the binary system were 26.85, 36.49, and 50.34 kJ/mol when the contents of LiTFSI were 20, 30, and 40 mol%, respec-tively. The effects of temperature and composition on conductivity and density can be explained by the intermolecular force between the complex ions of the sol-ute-solvent.

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