| 摘要 |
PURPOSE:To prevent a separator from being clogged with the polymerization reaction of pyrrole restrained, and thereby enhance charging/discharging characteristics by adding pyrrole delivatie into non-aqueous electrolyte. CONSTITUTION:In a lithium secondary cell, when pyrrole is used as additives for electrolyte in order to enhance a charging/discharging efficiency, pyrrole is electrochemically turned out to be pyrrole because of a polymerization reaction, its reaction causes a separator to be clogged, and also causes charging/ discharging characteristics to be degraded. In order to solves these problems, 5 to 10% pyrrole delivate by volume where the two position and five position of hydrogen are substituted for functional groups, is added to non-aqueous electrolyte where lithium salt is dissolved in organic solvent medium. By this constitution, additives are absorbed over the surface of lithium, chemical reaction is caused between the component of electrolyte and lithium, and the precipitation of lithium is changed in type, it is assumed that the separator is prevented from being clogged, and charging/discharging characteristics are thereby enhanced. |
