| 摘要 |
PURPOSE:To increase durability by forming a grid with a lead alloy in which the content of antimony is 2wt.% or less, and forming knots in a network apart from a current collecting part. CONSTITUTION:A grid is formed by expanding a rolled sheet made of a lead alloy, in which the content of antimony is 2wt.% or less, so that knots 3b (crossed parts of bones 3a) are apart from a current collecting part 1. Since the content of antimony in the lead alloy is 2wt.% or less, suitable softness resistant to distortion is obtained. Strength in the connecting part of the current collecting part 1 and a network 3 is sufficiently increased and durability in current collection is improved. |
