| 摘要 |
PROBLEM TO BE SOLVED: To provide a corrosion proof non-aqueous electrolyte secondary battery by coating a metallic armor can with a composite plating material whose corrosion proof characteristic does not easily deteriorate even when it is stored for a long period. SOLUTION: This non-aqueous electrolyte secondary battery has composite plating layers 10a, 10b composed of nickel metal and fluororesin fine powdered particles on a surface of the metallic armor can 10. As the fluororesin fine powdered particles having superior corrosion proof characteristic is uniformly attached to the surface of the metallic armor can 10, with nickel metal by forming the composite plating layers 10a, 10b composed of nickel metal and fluororesin fine powdered particles on the surface of the metallic armor can 10, the corrosion proof characteristic of the metallic armor can 10 can be improved. Whereby the corrosion of the metallic armor can 10 can be prevented even in the rise of potential of the metallic armor can 10 by the rise of potential of a negative electrode in an over-discharge state of the non-aqueous electrolyte secondary battery, and the long-term storage stability can be improved. |
