Positive grid corrosion elongation analysis using CAE with corrosion deformation transformed into thermal phenomenon

Communication—Improving Corrosion Resistance of Lead-Alloy Positive Grid of Lead-Acid Battery by an Electrochemical Prepassivation Interphase

“…Due to the critical working conditions, e.g., concentrated sulfuric acid (H 2 SO 4 ) electrolyte environment and high charging/discharging voltage, serious corrosion of positive grids becomes the fatal killer causing the failure of LAB. 3,4 The problem is indeed the random PbO film formed on the Pb-alloy grids when exposed to the air. Because the PbO film is not evenly cover the Pb-alloy grids, corrosion cell will be formed when the lead paste is coated and the H 2 SO 4 electrolyte is injected.…”