Patent ID: 6270922
Filing Date: 2001-08-07
Classification: C25D,H01M,Y02E,Y10T

Abstract:
In a battery container having an inner diffusion layer formed on the inner surface thereof and an outer diffusion layer formed on the outer surface thereof, the improvement wherein said inner diffusion layer consists of:a) an iron-nickel-tin diffusion layer;wherein said outer diffusion layer is selected from the group consisting of:1) an iron-nickel-cobalt diffusion layer;2) an uppermost nickel-cobalt diffusion layer and a nickel layer formed thereunder as the lowermost layer;3) an uppermost nickel-cobalt diffusion layer, a nickel layer formed thereunder as the intermediate layer, and an iron-nickel diffusion layer formed thereunder as the lowermost layer;4) an uppermost nickel-cobalt diffusion layer and an iron-nickel diffusion layer formed thereunder as the lowermost layer;5) an uppermost nickel-cobalt diffusion layer, an iron-nickel-cobalt diffusion layer formed thereunder as an intermediate layer, and an iron-nickel diffusion layer formed thereunder as the lowermost layer.