The Effect of Silver (0.05 to 0.15 per cent) on Some Properties and the Performance of Antimonial Lead Storage Battery Grids

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Abstract
An investigation of the effect of from 0.05 to 0.15% of silver upon the properties and performance, in storage batteries, of lead alloys containing from 4 to 12% of antimony. No previous study of the effect of silver present in the battery grid metal has been published, although some interesting properties of lead anodes containing silver have been known for some time. Sixteen 6‐cell storage batteries, representing 16 different grid compositions, were commercially assembled for the tests on battery performance, capacity, retention of charge on open circuit, and battery life. The physical properties of the alloys in the cast and in the heat‐treated conditions were determined, as was also the effect upon them of anodic corrosion. The anodic behavior of the alloys was also studied, using the time‐potential method. It was found that about 0.1% of silver added to the antimonial lead inhibits anodic corrosion, increases battery life, and does not increase the amount of charge retained on open circuit. A method for producing batteries of superior performance by the use of heat‐treated grids made of a 4% antimony, 0.1% silver alloy is suggested.

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