| 摘要 |
PURPOSE:To improve the cycle characteristic by containing asymmetric noncyclic carbonate in the solvent of a nonaqueous electrolyte battery having a positive electrode, a negative electrode using lithium as an active material, and a nonaqueous electrolyte made of the solvent and a solute. CONSTITUTION:A negative electrode 1 is pressed to a negative electrode current collector 3 fixed on the inner bottom face of a negative electrode can 2, and manganese oxide 85wt.% which is a chargeable active material, acetylene black 10wt.% serving as a conducting agent, and fluororesin 5wt.% serving as a binder are added and fully mixed and molded to form a positive electrode 4. It is pressed to a positive electrode current collector 6 fixed on the inner bottom face of a positive electrode can 5. A separator made of polypropylene porous film is impregnated with an electrolyte solved with hexafluoro lithium phosphate (fluorine Lewis acid lithium) serving as lithium salt into a mixture (50:50vol.%) of methyl ethyl carbonate (asymmetric noncyclic carbonate) and ethylene carbonate at the ratio of 1mol/l. |
