Electrolytic Properties of Ethyl Fluoroethyl Carbonate and Its Application to Lithium Battery
作者:Naoko Tsukimori、Noritoshi Nanbu、Masahiro Takehara、Makoto Ue、Yukio Sasaki
DOI:10.1246/cl.2008.368
日期:2008.3.5
Monofluorination of solvents exerts the strong polar effect on various properties. We have investigated the electrolytic properties of ethyl fluoroethyl carbonate (EFEC) and its application to a lithium battery. Conductivities of EFEC solutions are higher than those of diethyl carbonate (DEC) counterparts above 25 °C or below 1 mol dm−3 of LiPF6. The anodic stability of EFEC is also higher than that of DEC. The use of EFEC as a cosolvent improves the performance of a Li/LiCoO2 coin cell.
溶剂的单氟化会对各种特性产生强烈的极性影响。我们研究了氟乙基碳酸酯(EFEC)的电解特性及其在锂电池中的应用。在 25 °C 以上或低于 1 mol dm-3 LiPF6 的条件下,EFEC 溶液的电导率高于碳酸二乙酯(DEC)的电导率。EFEC 的阳极稳定性也高于 DEC。使用 EFEC 作为共溶剂可提高锂/钴酸锂纽扣电池的性能。