| abstract |
An object of the present invention is an organic borate having high solubility even in a solvent having a low dielectric constant; Non-aqueous electrolyte prepared from these organic borate and excellent in properties; Lithium secondary battery with improved high temperature storage; An electric appliance which does not need a protection circuit; This is to provide a variety of applications of electrical appliances.n n n The present invention is an organic borate compound represented by Formula 1 (wherein X represents lithium or quaternary ammonium or quaternary phosphonium, and R 1 , R 2 , R 3 , and R 4 each have 1 to 4 carbon atoms). The organic borate compound, which represents an independent halogen atom substituted alkyl group, wherein R 1 , R 2 , R 3 and R 4 represent a trifluoromethyl group or a pentafluoroethyl group, is particularly 0.8 mol / m in a solvent mixture containing a large amount of fluorinated solvent. provides the maximum value of the conductivity at low concentrations) of the dm -3 or more it can be easily dissolved at a concentration, 0.4mol / dm -3; Lithium secondary battery using lithium borate of the present invention; Non-aqueous electrolyte which minimizes the decrease in high temperature recovery capacity of this lithium secondary battery; An electric appliance which does not need a protection circuit; This relates to various applications of electrical appliances. |