| 摘要 |
PURPOSE:To obtain a nonaqueous electrolytic secondary battery having a large capacity and excellent cycle characteristic by using a material having specified components synthesized by the solid phase reaction of a lithium salt with V2O5 at a specified temperature as the active material of a positive material. CONSTITUTION:A nonaqueous electrolytic secondary battery is formed of a positive electrode, a negative electrode consisting of lithium metal or a lithium alloy, and a nonaqueous electrolyte containing lithium ion. The positive electrode has a lithium-containing vanadium oxide represented by Li1+xV3O8+y which is synthesized by the solid phase reaction of a lithium salt with V2O5 at a temperature less than 600 deg.C as an active material. The value of x is 0-0.6, but this value is a value ion the charged state of 3.5V or more and changed within 0 to 5 at the time of charge and discharge. The value of y is changed within the range of -0.5 to 0.3 depending on the oxidized state of vanadium. Hence, a nonaqueous electrolytic secondary battery having a large capacity, a high potential and an excellent cycle characteristic can be obtained. |
