IMPROVED LEAD-CARBON BATTERY CURRENT COLLECTOR SHIELDING

摘要

Provided is an activated carbon lead energy storage/battery containing an improved negative activated electrode packet exhibiting substantially reduced resistance with parted paraffin impregnated expanded graphite foil shielding overlying a cutaway notch in the underlying current collector to permit sulfuric acid electrolyte infiltration. Activated carbon lead negative electrode is characterized by a) a generally planar metal current collector, a collector tab and at least one notch of select dimensions formed along the bottom edge of said current collector, first and second layers of expanded graphite foil of select thickness respectively laminated over said first and second surfaces each of said layers incorporating a small port positionally corresponding to and overlying the at least one notch where said port extends through the graphite foil thickness; and c) first and second activated carbon sheeting laminated over said first and second layers.