| 摘要 |
PURPOSE:To increase a charge/discharge cycle characteristic and battery capacity by forming a lithium ion permeable surface layer with an arsenic-containing polymer on a negative electrode, and using a material except for an arsenic compound as a solute of a nonaqueous electrolyte. CONSTITUTION:A positive electrode 1 and a negative electrode 2 are faced through a separator 3 and a glass fiber nonwoven fabric 4, and housed in a battery case comprising a negative can 6 and a positive can 5. The positive electrode 1 is connected to the positive can 5 through a positive current collector 7, and the negative electrode 2 is connected to the negative can 6 through a negative current collector 8. The negative electrode 2 is formed by forming a lithium ion permeable surface layer with an arsenic-containing polymer on metallic lithium. The glass fiber nonwoven fabric 4 is formed by impregnating a nonaqueous electrolyte containing a material except for an arsenic compound as a solute. Since the reaction of metallic lithium with the electrolyte is suppressed, charge/discharge cycle characteristic is enhanced, capacity is increased, and safety is enhanced. |
