Corrosion layer conductivity of the positive grids in lead-acid batteries as a function of lead alloy composition

The properties of a contact corrosion layer (ККС), which appears on border of (preliminary oxidized) lead alloys with products of their anode oxidation and corrosion, were investigated by methods of impedance spectroscopy and on speed oxidation of ions Fe (II). It was found that the contact corrosion layers that appear on lead-antimony alloys have higher electronic conductivity. Alloying by tin and cadmium cause increase of conductivity contact corrosion layer (CCL) that appears on low-antimony lead alloys. Essential increase of conductivity CCL that appear on lead-calcium-tin alloys is caused by alloying addition of silver (>= 0.1 мас. % Ag).


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